问:
Keep android phone running for days

This is our situation:

We have an android tablet that must run some stuffs for longer than one day (running videos, musics or other).

For this purpose we attached our tablet to an external battery which should keep it charged for the duration, otherwise it would discharge totally in some hours.

The problem

After android M, with the battery process changed, this is what is appening:

Phone is running at (for example) 80% battery

After one hour of running it is fully charged to 100%

The phone goes into a non-draining mode (for battery saving)

The external battery, without any effective drain, goes standby mode.

Even if the phone goes back to 99%, the external battery is standby mode and won't charge it

Result

The phone discharges in some hours and the attached external battery is fully charged.

Is there any way to solve this problem? I would avoid creating an app that hardly drain battery every time it goes to 100% and stops at 99%.. but looks like the only way I found.

PS:

Actually we are intentionally ignoring that long-usages of the batteries reduces their life, at this moment it's not the point

Thanks all!

Title: Keep android phone running for days


问:
Using a private OSM file as custom overlay on OSMand?
I have a custom OSM file which contains just a boundary of some region, and I would like to have it permanently displayed in my OSMand app, as an overlay or underlay.

I created the file using gpsbabel to convert from a KML file.

I have a hard time figuring out how to make OSMand see the file as available for underlay or overlay. When I click "Configure Map", and then "Overlay map...", Enable, "Install more..." it shows me a long list of maps, but no option to use the OSM file I created.

I know I can display the GPX file on my map using the Show GPX data option in "GPX files" menu, and that works, but just curious to learn if and how I can display custom maps using overlay or underlay.

ContentLicense: CC BY-SA 4.0


问:
Clearing Maps defaults doesn't work
Google Maps was set as the default maps app on my Samsung S8.

I went into settings-->apps-->Maps-->Clear Defaults, and now it says "None set as default".

However, in Calendar when I click on an address - it will launches Maps and doesn't ask me to choose a default. I also have Waze installed ... so why aren't I asked to choose a default again?

Title: Clearing Maps defaults doesn't work


问:
USB connection mode options no longer showing in notifications drawer
My phone is plugged into my computer via USB - it is charging, but I do not see any options to change the USB connection mode in the notifications drawer. I have seen and used these options in the past, but it is not showing now for some reason. They looked similar to this - https://cdn.arstechnica.net/wp-content/uploads/2015/05/usb2.png.

For context, I had the phone in 'USB Debugging' mode earlier on, but I've since turned it off - adb devices was not listing my phone anyway, although that also has worked in the past.

I am running Android 8.1 on a Nexus 5X.


问:
Change Resolution of HDMI output (USB-C / Slimport)
I have been working on this problem to avail

I want to change the screen resolution of my EXTERNAL monitor connected to my android phone. Phone is android 7.0 LG v20, and I am using a USB-C Hub with an HDMI cable to my ULtrawide 21:9 monitor. The problem is, the phone displays at it's native resolution; 16:9, giving black bars on the screen. I have done lots of research, and it apparently is possible to change the hdmi output resolution

However, I am wanting to change the resolution to a different one aspect ratio, (2560x1080P), not lower the resolution like in these questions:

Example A

Example B

And, when running the code dmesg and filtering with "hdmi" or "edid," the
hdmi_edid_add_sink_video_format: EDID: format: never comes up. I did try >cat /sys/devices/virtual/graphics/fb1/edid_modes which got me quite a few options/numbers, however I have no idea which is which and if they are supported. Anyone have a solution?

I do NOT want to change the entire resolution of the phone through ADB, I know you can change it with adb shell wm (resolution) but I have read of issues such as black screens and It is irreversible without ADB/ a terminal emulator, I wouldn't always want the phone in ultrawide mode.


问:
How to disable viber in-app sounds

Hi everyone, appreciate your help on this. How can i apply in android the similar viber setting in iphone to disable the in-app sound?

Basically i still want to hear the viber notification when my phone is locked but i do not want to hear the ding sound when a new message comes in while I'm in the chat thread already.

Title: How to disable viber in-app sounds


问:
KDE Connect Cannot Use SD Card?
I'm using KDE connect from my Kubuntu 18.04 desktop to try and connect to my tablet (Tab A 10.1 running Android version 7). The internal SD card registers (I can see it) in Dolphin (File Explorer), but I can't read or write to the directory, and I get an error when I try to do so.

From what I recall, this may be due to an Android security policy. Is this what is occurring? Is there any way to use KDE connect to access the SD card? (My tablet has very little internal memory)

Title: KDE Connect Cannot Use SD Card?


问:
SD card problem when Downloading
I recently updated my Nokia 3 system to android 8,  I have a space of 5 GB in my SD card and 6 GB internal. I had been using my SD card as internal storage before I updated my system. But now with that free space of 11GB ( 5GB SD card and 6GB internal, I can't download songs from SNAPTUPE , it indicates that "there's no enough space in the SD card, free up your space" what could be the problem, and how can I solve it out without interfering with the data already in my SD card. Thank you</p>

Title: SD card problem when Downloading


问:
How to reuse phone board without casing, screen
I have galaxy j7 2016 board with this rom installed. I have a lot of knowledge about hardware but my question is how to access shell without screen if usb debugging is not enabled? I basically want to control system via adb. I have board, both cameras, both speakers and vibration motor. Im planning to add antennas.

Board rev: SM-J710F_REV03 2016.03.15 V10

Can someone explain me how to take control over phone without screen and digitizer?


问:
Popups with promotion
Sometimes, I'm getting popups on my Samsung S8 with promotions. Especially it is annoying during navigation with Google Maps. How to disable popups? How to know which application is responsible on that?

Title: Popups with promotion


问:
How to take a photo similar to an old photo?
Is there any app to help take a photo similar to an older photo of the same building/view? like in the past winter or summer.

I am thinking of an app that shows the old photo on screen a little bit transparent, so I can adjust the position of camera and take an identical photo.

Searching didn't help. Thanks.


问:
Any information on when ICS will be available for the Nexus S GT-I9020A (AT&T/Fido/Rogers)

Possible Duplicate:

  When will my device get the Android 4.0 update (Ice Cream Sandwich)?

I know the version for T-Mobile (GT-I9020 or GT-I9020T) Nexus S has been available for download since December, but is there any information on when a similar update will be available for the AT&T/Fido/Rogers (GT-I9020A) Nexus S?

ContentLicense: CC BY-SA 3.0


问:
Is it possible to/how do I change the CSC of an android phone
I apologize if I did not formulate the question correctly however I'm a 'noob' regarding Android versioning and Android ROM software etc. Here is some background regarding my question.

I bought a 'not simlocked' phone from a retailer here in the Netherlands. With the intention to buy a sim only subscription from a network carrier as this was 50 euro's cheaper. Note that the network operator is also Dutch.

On the website of the network operator it shows that the Samsung Galaxy A5 2017 supports Wifi calling at that provider. However I do not see WiFi calling in the options. I suspect this is because the CSC on my retail Samsung Galaxy A5 2017 is not the same as a Samsung Galaxy A5 2017 bought at Tele2. The Samsung helpdesk of my country says it should be possible if you insert a Tele2 simcard.

My question is, is it possible for me to change the CSC of my android phone to that of the CSC of Tele2/My network carrier as I would like to use WiFi calling. Inserting the Tele2 simcard does not change anything with the software.


问:
Work-around to get USB-C headset to work for calls (in Android smartphones)?
It is an interesting, albeit frustrating, phenomenon of late that manufacturers of soft- and hardware these days (including Huawei, Samsung and apparently also Google) release new products which do not function as advertized:

I use my usb-c setup for mostly listening to hi-res music, it's
  annoying when I get a phone call and I have to disconnect my USB-c
  headphones to answer the call. Seriously Samsung needs to get there
  head out of the ass and fix this problem. How can every other flagship
  phone handle this including the OnePlus
  6.

and

bump. So I did some bumming around. I don't think it's the equalizer
  that's the problem. I think the phone app is incapable of routing
  calls through
  USB-C.

and

Google acknowledges Pixel 2 USB-C headphone adapter issue, says fix
  coming

and

It’s 2018 and USB Type-C is still a
  mess

and

How USB Type-C Has Failed Android Smartphone
  Users

Here's what I'm confronted with: Huawei P10 with up-to-date software as of 3 Sep 2018, build nr. VTR-L09 8.0.0.375(C432) and "Dialer" app/process (?) version nr. 8.1.0.301 and Huawei Active Noise Cancel(l)ing Earphones 3 (cm-Q3)  where sound works and calls through other apps like WhatsApp works but not through the standard telephone app. Any ideas on how to route standard phone calls through another (trustworthy...) app?

Other than finding a viable work-around all I can do is to hope that a fix will percolate through eventually through an update...


问:
When I try to sync with Google Photos, it stops after a few photos
I am using the Google Photos app on my OnePlus 3 android phone. Each time I open it, Photos starts backing up (e.g. "Backing Up - 734 photos left"). This number will drop by 10 or 20 and then just stop. I have left it for a long time and it never changes. If I then close the app and open again, it will do another 10 or 20 and then stall again. So it is very slow and tedious. I am backing up to Google Drive, which has plenty of free room. Anything obvious I can do to fix?

I have posted on a Google forum but got no replies.


问:
Prevent VPN disconnect
I installed DNS66 to use a custom hosts file to prevent access to certain websites. However it's easy to disconnect from it because a notification shows up permanently. I could use a blocking app to block access to the DNS66 app but I don't have a way to block access to the notification. Is there a way I can keep the VPN on permanently and make it difficult to disable?

Samsung S7 on Android 8.0.0

Title: Prevent VPN disconnect


问:
How to add a CA to trusted root
Since android 7, apps will not obey the user installed CA certificates anymore. So as a tester, if you want to test and verify issues such as certificate pinning you need to install the custom proxy certificate into android trusted root.

I made a research on this and found an article which does this. It basically suggests the following:

Create a custom certificate using OpenSSL

Convert the certificate to android compatible form (with SomeHash.0 extension)

Move the certificate to android trusted root /system/etc/security/cacerts/ using adb push and move the certificate to the proxy tool as well

Change permissions and own the certificate by root user.

I did exactly everything mentioned in the article and yet didn't succeed. I could see my certificate installed in the Root CA store and I have manually checked and enabled it as well.

When I connect the proxy tool, I am able to intercept all the http traffic but no https traffic with HSTS enabled. I even deleted all the certificates in the trusted root and kept only my certificate. Still the same behaviour. What might have gone wrong?

I tested this with an android emulator running on Genymotion. I didn't try it on a real physical device. The emulator was Google pixel with Oreo 8.0.

I believe this is a much needed requirement for all the testers. So any helpful input is much appreciated.

Title: How to add a CA to trusted root


问:
Xperia XZ recording video sync problems
I have an Xperia XZ F8331 with Android 8.0.0, which has been working fine for months. Recently, however, whenever I record a video it works for a few seconds, then the picture will freeze for a short time but continue recording sound, then everything will restart, meaning the recorded video is way out of sync with the sound for the rest of the video.

It's basically made it unusable for recording videos.

Nothing has changed; it is recording to the flash card, but it is a high speed card and has always worked fine before.

What could the cause be?

Title: Xperia XZ recording video sync problems


问:
Vodafone smart prime 7 SD card issue
I recently got a Vodafone Smart Prime 7 smartphone. I want to extend the internal storage of the phone to 32 gb using a MicroSD card.

When I insert the card, the phone detects it "New SD card detected". Then i try to setup the card and choose "Use as internal storage".
Then it starts "Format as internal storage". I choose "Erase and Format".

Then it starts "Formatting SD card". It takes some time but then it finishes and asks me to move data. As the same time i get a notification on top saying - "SD card unexpectedly removed"

So on the "Move data now" i choose "Move" and get a message - "Not Enough storage space". After sometime i get a notification - "Could not move data. Data is in original location". Now ig i go to Settings > Storage and USB - I see "SD Card - Checking"

When i remove the SD card from the phone and put it into the PC it gets mounted as 2 drives. One is 16 mb and the other rest of the space.

How can i fix this? Any help is deeply appreciated.

Title: Vodafone smart prime 7 SD card issue


问:
Code/Program Java on Kindle Fire

Possible Duplicate:

  How can I do development on my Android device?

OK, so I've just got a new Kindle Fire (which I love), and I've been wondering:

Can I develop Java programs on my Kindle?

Is this even possible? Can a Gingerbread tablet do this?  I am looking for an offline solution.

Note: This is not a programming question, so it would be off-topic on any other SE site

Title: Code/Program Java on Kindle Fire


问:
Include in-app browsing history in Chrome sync
On Android, in-app browsing is facilitated using an in-app version of Chrome (1, 2, 3). This means there are actually 3 versions of Chrome:

Chrome Desktop

Chrome Mobile

Chrome Custom Tabs (in-app browsing)

When logged into Chrome, the mobile and dekstop versions sync their history, settings, bookmarks etc. (4, 5).

In certain apps, like Facebook, an in-app version of Chrome launches when clicking on links. The pages visited there are also recorded in the history of the Chrome Mobile. However, they are not synced with Chrome Desktop.

Is it possible to sync the browser history of the in-app Chrome Custom Tabs with both Chrome Mobile and Chrome Desktop?


问:
Applications that reside in memory both running and cached
I can see some apps running in background even if I have blocked that app's background data. I don't need to force close that app from developer options.

I need to know,

what is the duration of keeping an app (which is not opened) in ram. (It may be a system app, and I know that system app is required for better functioning. For example Bluetooth, I have turned on and turned off, but it showed in running services)

What is the duration of an app (which is opened recently) kept in ram. Opened app is closed also removed from overview (recents).

Why are some apps loaded to ram automatically? (Into Cached processes)

Running 8.0 Oreo in moto x4


问:
Application Usage Statistics
Is there any way to get application usage statistics? </p>

<p>Specifically, I would like to know how many times an application (like for example Hangouts, or Firefox) is started. And by that, I mean times that the application was active/full screen, not just in the memory. </p>

Title: Application Usage Statistics


问:
Why am I finding what looks like phone numbers in my metered connections settings?
I find these 10-digit numbers in my metered wifi connections panel. The second number I ran a google search on and was informed that the area code does not exist. I dont know if these are phone numbers. The same search also showed that this impossible number was tagged as harmful as well as scammer calls. Can you guys tell me if these "networks" are somthing to be concerned about or normal. After many searches worded many different ways I could not find any information about ten digit numbers in the metered wifi connections setting panel. They do not show up under saved networks so Im stumped here. Thanks for your time.


问:
Disable any OTG from USB on Samsung
is there a way I could stop any flash OTG from accessing the tablet?
    I don't want the user to read or write anything to it
I don't want to use the OTG anymore, the tablet is rooted. It's a samsung tab A 2016 with Android 6.
Thank you</p>

Title: Disable any OTG from USB on Samsung


问:
Does Google has a page where they show when an Android version isn't supported anymore?
We are in doubt of supporting a device running an older version of Android. I looked everywhere on the internet, but there seems to be zero information from Google how long they will make security patches for a certain Android version.

I did find the Wikipedia 'Android Version History' page, but it's unknown where they got this information from.

My question: does Google has a page where they show when an Android version isn't supported anymore?

Thanks in advance,

Gerjan


问:
My headset is only considered plugged when I remove it
I have a moto g 4 play and a headset. I can use other headsets with no issue on my phone, and my headset also works properly on other phones (or pc). The issue I'm having is:

When the headset is plugged in the jack, the phone doesn't acknowledge it. When I unplug it the android suddenly recognizes the phone being plugged and unplugged immediately. Some evidences that it is plugged when I remove it are: the volume changes and spotify songs are paused.

I believe it is a software bug, but I cannot assure it. Can anyone help me?


问:
chrome won't open video in external app
I have a website that serves raw .mp4 files; Google Chrome stopped asking which app to open the videos in when I click on a link to one of the videos. I've tried clearing the defaults for which app to open for links and I've verified that my video player declares an intent for *. How to I change Google Chrome back to allowing me to open a link directly to a video in another app?

Title: chrome won't open video in external app


问:
"Incorrect code" when scanning QR in Android Messages for web
I've installed Android Messages in Samsung Galaxy S4 mini i9195 and it works fine, except one thing - it keeps complaining with an "Incorrect code" message whenever I try to scan the QR of https://messages.android.com

Everything else related to QR, like https://web.whatsapp.com, works perfectly for me. Is there any way to fix this? If not, I'll have to revert back to the built-in Messages app...


问:
Unbricking a hard bricked Meizu M3 Note
I got an old and bricked Meizu M3 Note in order to fix it. The device isn't mine so I don't know what caused the brick.

The device doesn't respond to anything - when clicking the power button or trying to boot into recovery nothing happens, just a black screen.

I tried following many tutorials on xda and other sites, using SP Flash Tool, but nothing worked:

https://forum.xda-developers.com/android/help/meizu-m3-note-l681h-bricked-please-help-t3700024

http://forum.flymeos.com/thread-36503-1-1.html

https://forum.xda-developers.com/android/development/developer-verified-meizu-m3-note-hard-t3682743

https://forum.xda-developers.com/android/development/guide-meizu-m3-m3s-unbrick-t3515231

I tried flashing the stock ROM but still nothing.. The device keep connecting and disconnecting every 3 seconds when connecting to PC using USB cable.

After clicking the Download button in SP Flash Tool and connecting the device, an error message appears:

STATUS_BROM_CMD_STARTCMD_FAIL (2005)

I'm pretty sure that the MTK drivers are OK coz I used them to unlock bootloader & flash TWRP on two other Meizu M2 Note devices and everything worked fine.

Windows 7

SP Flash Tool v5.1842

Title: Unbricking a hard bricked Meizu M3 Note


问:
Android gmail password folder
I'd like to ask you how can I get my password of my email that I forgot (it's a Yahoo account).

The account is mine, I changed phone and when I was about to type in gmail-app the password, I couldn't remember it anymore.

The situation is very strange: I can access the account on the older phone, but without password I can't do it on my new phone. I don't remember also secrets questions, and the Yahoo recovery password was insuccesful for me.

What I think I can do is to copy the file in which Android stored my password/hash of my password and copy to my new phone, hoping that this way gmail app would recognise again my email account.

Is it possible? I've already read this How is the Gmail password stored in Android - and where? but it is not very useful for me: EmailProvider is almost empty of useful information.

Thanks!

Title: Android gmail password folder


问:
How to revert Galaxy S8+ to stock firmware?
Is it possible to revert Samsung Galaxy S8+ to stock firmware? The phone was interrupted while upgrading the software and is now bricked.
The model is SM-G955P</p>


问:
Internal storage data disappeared, trying to dump
When I tried to use my SGS, it was unresponsive and didn't wake from sleep, then I rebooted it. After the boot, the desktop was like stock. I started checking my apps, some had its data intact and some lost all data. It seems that my data on the internal storage (NAND?) is gone. The internal SD card is ok.

The problem: I had hundreds of notes on the Notes app. I want to try to recover them.

The idea is to dump the internal storage raw data to the SD card (something like dd would do). My phone is not rooted.

Questions: any advices on this approach? Any ideas for a better approach?

Info:

Not rooted. Using stock Android 2.2 froyo.

Only a few apps installed.


问:
Android x86 version 7.1 xposed is bootlooping

Hey!

After trying to install Xposed framework on every version of Android x86 I found out that Android x86 version 7.1 is the only version that xposed is "bootlooping" (r1 & r2 & rc). Is anyone else encountered such thing?

I tried to install Xposed in two different ways that both of them worked on the other versions of Android x86 (4.4, 6.0, 8.1):

flash the Xposed zip from the terminal (unzipping the zip, giving permission to all folders and running sh META-INF/com/.../flash-script.sh)

Installing via the install option in the XposedInstaller APK

as I already wrote, this two ways of installation worked perfectly on versions 4.4, 6.0 and 8.1 of Android x86 project but not on 7.1.

Hopefully someone else in here encountered this problem of the bootlooping on Android x86 version 7.1 as well and might have a solution.

Thanks.


问:
Why is all audio suddenly phase cancelling on headphones?
When I listen to audio through headphones on my Galaxy S2, there's a phase-cancellation effect that attenuates any centered signal (so I often get most of the music but little of the vocal, or on podcasts with voices panned center I get very little anything).

But if I listen in the car - through a 3.5mm male-to-male aux cable -  or on the internal speaker, the audio sounds fine.

I've tried four sets of headphones, with both two and three contact jacks.

Also tried hard-resetting the phone, and this didn't have any effect.

All these headphones used to work fine. I started having this issue earlier this week, around 2/28.


问:
Gmail keeps notifying me even for mail I labelled with the intention to not be notified regarding
This is not a duplicate of Stop Gmail notifications when receiving email from particular sender
Because the question here includes that after I tried that, I still get gmail notifications.

I receive some email that I don't want to receive notifications for. Usually the kind of email that is sent to an email list.

I added some filters for various emails I receive like this e.g.

So they get the label regularblkmail

I don't want my phone to be notifying me whenever I receive an email like that.

And if that means that those emails don't even go into any primary inbox, and they go into some other category that I never see unless I click that category, or "all mail" then fine. But I don't want to get notifications.

If I go to the gmail app, and I push the 3 bars, and I go to 'settings', then pick my email address, that the email is going to, then choose Manage Labels.  Some labels say "not synced", some say "last 30 days".   The label "regularblkmail" says "last 30 days". (it used to say 'not synced' but I managed to get it to say synced to 'last 30 days'). When synced, which it is, it enables some options like "Label notifications". I unticked the box. But I still get notifications when the email comes.

I notice that one of the example emails has had 2 labels applied to it. "inbox", and  "regular blkmail".

I don't know if the fact that it has the 'inbox' label, is the reason for it notifying me? (if so i'm not sure how to make the filter not give that inbox label to that email).

How can I prevent notifications for certain emails I filter for?


问:
Android Tablet IP Webcam App no accessible after few seconds
i have an android Tablet (Telekom Puls) with Android 5.0.1 on it. Installed the "IP Webcam" App. When i want to access the Webservice of this App from another Computer in LAN, i get "connection refused" in the Browser.

When i turn off/on the WLAN from the tablet, a few seconds the access from another computer works and i can open the web service. But after few seconds its "refused" again.This happens every time i toggle the WLAN.

I´m New to android, is there any security option, which blocks external access in android OS? I don´t have installed any other firewall or antivirus software.

would be great if some can give me a hint!

thanks and best regards,

dave


问:
How to change Opera language back to English?

Possible Duplicate:

  How can I set the language in Opera Mini 6?

I installed Opera in a Samsung Galaxy Y. Since probably it detected that I'm in the Philippines, the language defaults to Filipino. How do I change it to English?


问:
Need Data off of a Locked, Unrooted Nexus 5 Stuck on Pre-Android Logo Splash Animation
Alright, this is a long shot, but I really would like to get my data off of my old, soft-bricked phone.

It's a Nexus 5 (running Android 6.0.1), which has never been unlocked or rooted. It gets stuck on the spinning circles that appear after the Google logo (the ones that normally become the Android wordmark). What I do have is USB debugging enabled, an authorized private key for that debugging, a Windows 7 system, access to a MacBook, and access to a variety of... hardware tools at my disposal. ADB commands work fine at whatever point in the boot process that it reaches (e.g. adb shell, logcat). Stock recovery also runs, for whatever good that is (apparently nothing; what's even the point of being able to "Mount /system"?).

I was simply scrolling through my miles-long Watch Later playlist in the official YouTube app when the system suddenly rebooted. When it finished rebooting, the (stock) launcher and Google Play Services would continuously crash unless in another app (only accessible via the middle/app history button). I brought it to my workstation intending to do diagnostics on it, but I must have hit the lock button or something on the way over, or it otherwise turned off on its own. Since then it has not made it past the aforementioned point in the boot sequence.

The logcat output I've retrieved is located here. I'm scared that it may be hardware, or at least a corrupt filesystem.

I've scoured the net and all resources I find talk about how to get data off when either having root, an unlocked bootloader, a system with a working UI and Activity Manager and Package Manager, or just a custom recovery. I have none of those things. Anything that does mention a situation similar to mine gives a single option: full data wipe caused by unlocking the bootloader.

While I accept that it was foolish of me for thinking stock would be "less risky" than custom, I remain optimistic that, if it actually is a software issue and not a hardware one, there may still be some way out there way of getting everything off of here. This is a device that's rocking a relatively outdated version of Android. I'm interested in any way I can get my data off here, even if it's more black hat than not.


问:
S7 charging problems
Apologies if this has been answered already.  I searched and found many variations on this issue, but nothing that applies directly to my situation.  At first, I thought my old off-brand cable was to blame, but after using the same cable/base/outlet to charge my wife's phone (also an S7) to get a nearly complete charge within an hour, I've determined that it is an issue with the phone.

My S7 charging time has gotten slower and slower over the last week or so.  It went from regularly fast charging to mainly standard charging at first...and I'm now at the point where it goes from charging to fast charging to not being connected at all...and then through the cycle again, but in no particular order, and without the phone being moved.  Sometimes it's (fast or not) charging, sometimes it's not charging at all.  Regardless of what it says it's doing, it's barely maintaining a charge, let alone making any progress.  It has never said that it's charging slowly. I've seen that message before when I was using an older cable that was due for replacement.  Not present here.  It's charging very, very slowly even when it's stating an at least regular charging state.

Having already ruled out a cable/base/outlet issue, I've tried closing all apps and even turning the phone off.  I also cleaned lint/dust out of the charging port.  Nothing has helped.  After cleaning and then turning my phone off last night at 18%, I woke up to a 91% charge seven hours later.  The phone downloaded and installed the latest update to 8.0.0 (Oreo) earlier this week.  This issue pre-dated the update, but I can't say for sure if it was worsened by the software change.

Every page/post that I've come across so far has at least one variable that makes the situation different from mine.  Any thoughts or ideas would be greatly appreciated.  Thank you in advance!

Title: S7 charging problems


问:
Cannot use Android phone in fastboot mode
I have a Samsung Galaxy On7, Android 6.0.1.

On my computer (Windows 7, 32-bit), I have adb and fastboot installed. I can work on my phone properly from adb. But the problem starts in fastboot mode.

When I put my phone in bootloader mode, the computer takes the phone to be a modem. There are several videos that show how the driver problems can be solved, but once my computer identifies the device as modem, I cannot do anything else, as it is reluctant to install the Android Bootloader Interface drivers for my phone, saying they are the ones meant for a modem.

I have even tried to stop auto installation of drivers, but even then the device is recognised as a modem.

Is there any way I can stop my computer from recognising the device as a modem?


问:
Tap screen to turn it back on after timeout
I noticed that on my Samsung Galaxy S II (Android 2.3.5) after the display is turned off (per Settings -> Display -> Screen time-out) you have to press the physical Home or Power buttons to get it back on. Tapping the screen doesn't do anything.

Obviously the screen should get locked soon, so that you can put the phone in your pocket when the screen is off, but letting you tap the screen immediately after it turns off to wake up the display shouldn't hurt.

Is it just me, or how do you handle this? Is there an app to fix this specific issue? Do you know if this was discussed on the official issue tracker or if it's just my phone/my OS version?

(Aside: I know there are apps that let you configure timeout per-app (see e.g.
Screen timeout when reading), but I'm getting hit by this independent of the app I'm using, and anyway I wouldn't like to have to lock the phone manually to save power when the active app prevents the screen time-out. I think the screen time-out should be based on whether I'm actually using the phone, not on the active app.)


问:
can't log in to Snapchat - Problem connecting to the server
Firstly, apologies if this is the wrong site to ask this question. I didn't have a clue which site, this seemed most realistic.

Problem :

Snapchat was working fine. I logged out of my account and when I try log back in I get the error: There was a problem connecting to the server. Please try again.

I have tried multiple solutions such as clearing the cache snapchat, reinstalling google play services, clearing data on snapchat, rebooting device. None of which work.

You might say why not reinstall snapchat? Well my device is on 4.1.2 meaning if I uninstall and go back to the play store to reinstall it, I wont see snapchat there because snapchat has updated further than my phones version.  (I don't have the filters on my device because it doesnt support the filters too)

I tried contacting snapchat, but alas, no reply.

Any suggestions?


问:
What are some fast ways to install same apks on 400 android tablet?
I work at a school who wants to implement a modern education system with tablets.
There will be around 400 tablet all should have a few applications installed for students to use.

I'm planning to have the apps as apk and install them but this will definitely take a lot of time. Is there any way you would advise me to? Can I upload them online and have the tablets in some kind of way to automatically install them online?

I really appreciate your help.


问:
Offline file transfer into Android-x86 virtual machine?
VirtualBox SMB servers are unfortunately unsupported by Android and it's third party file managers.

How do I transfer files into an Android VM without needing to upload the file online (if no Internet connection is available)?


问:
Outlook Calendar Accept Calendar Links
Lot's of web applications and other tools link to the calendar to add information.

Unfortunately Outlook Calendar doesn't seem to accept creating new events through an outside link.

Is there a way to fix this?

Title: Outlook Calendar Accept Calendar Links


问:
Motorola E4 pop up notifications disappear
How ca.n I view my Moto E4 pop up notifications,after I've viewed them or accidentally swiped them away,they literally disappeare and I CAN'T FIND them anywhere/ or how to.There has been many opportunities I've missed because I can't view the pop up notifications after the first view or accidentally swipe away,how can I get those notifications back to view,I've looked everywhere! Thanks for any help you can give in advance</p>


问:
I can't bypass FRP lock on my Galaxy J5 2016
I was just following a recommendation of MalwareBytes to encrypt my phone.
So I plugged in the power cable as it said and confirmed my decision. The phone turned off but then there's only a black colored screen that says "Custom binary blocked by FRP" and "secure fail: kernel".

My phone is rooted but there never has been any malfunction. But recently the screen started to turn on every few minutes without any obvious reason. It said something about a Power Sharing app that I could get. I was never able to identify the cause of that problem.

Just today I reset the developer settings back to normal. Then I tried to make the encryption... That was extremely bad timing.

Odin doesn't recognize my Samsung and I can't use the ADB shell because it doesn't return a serial number or any other life sign.

Restarting doesn't work, it just brings me right back to the FRP lock.

Any suggestions are highly appreciated!


问:
Pixel 2 repeatedly playing a sound alert without explanation, what does it mean? (Sound included)
My Pixel 2 has gone crazy in the last few days. Maybe related to the latest Android update that I got a few days ago, but I'm not sure.

I recognize the sound (I have heard it earlier) but it has never behaved like this before. When the screen is on, except in phone calls, it will (randomly?) play this sound over and over, sometimes 20 times in a minute, sometimes it will be quiet for a while. I haven't figured out any logic of when it plays or not, but it stops if the screen is turned off, and it stops during phone calls.

It also plays when using other apps, not just when showing the desktop.

I'm attaching a sound sample here, 28 second recording on the phone itself just lying still.

https://drive.google.com/open?id=1tQUkt1pUj9yFRGNs6jDoFxsVj7HYnpP8


问:
Clear all apps user data with ADB without factory reset
I'm trying to achieve the goal of clearing all app data using Git Bash on Windows, but I don't know exactly if this approach is wrong, because it shows FAILED on every line.

```<code>adb shell 'pm list packages' | sed -e "s/package\://" | xargs -n1 adb shell pm clear
</code>```

List all packages

```<code>adb shell 'pm list packages'
</code>```

Remove "package:" from the begining of each line

```<code>adb shell 'pm list packages' | sed -e "s/package\://"
</code>```

Execute "pm clear" on every package name

```<code>adb shell 'pm list packages' | sed -e "s/package\://" | xargs -n1 adb shell pm clear
</code>```

Regards.


问:
Make screen brighter when phone is raised?
When raising my Google Pixel XL (latest Android Pie), without pressing anything, it already shows the clock, weather, battery percentage etc. -- that's nice. However, the screen at that point is also very dim, much too dark, with the clock barely visible when outside. I've tried adjusting various brightness settings (making it brighter, toggling adaptive brightness) but they all seem to be unconnected to this raising-screen, they all just make it brighter once I click a button or unlock. Is there a way to increase the raised-screen brightness, though? Thanks!</p>


问:
How does WhatsApp update the "last seen"?
Previously we were able to turn off mobile/Wi-Fi and turn on airplane mode, read the message, turn off airplane mode and turn mobile data / Wi-Fi on and that was the end of it. However, now it seems WhatsApp stores the information of the user opening the message even in offline mode to be sent later when it gets a connection.

My question is regarding last seen. What if I turn on airplane mode, read old messages that I have already opened. Close WhatsApp completely and turn airplane mode off. Will my last seen now be the time when I was reading old messages in airplane mode, or the last time I actually opened WhatsApp while connected to the internet. Can anyone confirm this?


问:
Can I use Google Assistant alongside another assist app?
I already have an assist app setup which needs access to the text on my screen.

Currently, when I open Google Assistant through its icon on my homescreen, I get a screen telling me "The Google app isn't your default assist app" (screenshot)

I don't want to use Google Assistant to interact with what's on my screen, rather I just want to use it as a voice assistant. I could just use the default "Google" app which has features for voice search, but "Google Assistant" does that AND has the ability to integrate nicely with other apps using IFTTT, which is something I want to set-up.

Is there a way to use Google Assistant integrations from the regular google app, to use Google Assistant can be used alongside another assist app?


问:
Is it possible to activate the iris recognition infrared LED and take an IR photo?
Is it possible to turn on the iris recognition infrared LED and take photos using the front camera, that works on the Galaxy S9+?

In the YouTube video: "Poco F1 Infrared Camera Hack - How to take photos with the Infrared Camera" they mention a Google Play Store application: "MIUI Hidden Settings" that allows you to turn on the iris recognition LED and activate the front camera at the same time - the only limitation is that to take a photo you need to take a screenshot, with resulting lower resolution. That APP doesn't work on the Galaxy S9+.

Also discovered, the "ToF Viewer / Night Vision" App  by "Luboš Vonásek Programmierung" but it isn't supported on my Samsung S9+. Apparently it does work on a half dozen newer Samsung phones. You may want to visit their GitHub: "ARCoreNightVision".

I tried quite a few versions there, and found that "040.apk" through "043.apk" installed and started without crashing, but otherwise doesn't work. Version "050.apk" enabled an additional control, despite that the App couldn't activate the ToF sensor and produce an image. This shows some hope for this being possible. In another directory there's TangoNightVision, but the few I tried didn't install; the other directory was much more promising.

I found a similar question: "Is there an Infrared camera app?" at XDA. There's a somewhat similar question here called: "Controlling IR in Galaxy S8?" but it seems limited to turning on the IR LED (which might be enough) and doesn't mention IR photography which is what I want.

The results, if you can get it working on your phone, seem reasonable:

(Tap to enlarge)

I even tried dialing the hardware test number *#0*# but the phone doesn't allow screenshots, nor is the image very large or illuminated. If there is another test number or a means to trick the hardware I can't find it, if there is a particular APP it is likely rare and the only one available.


问:
What is the partition layout of the Google Pixel?
I have searched for a listing of the partitions on the first Google Pixel. What are they?</p>


问:
How can I list the contents of my sd card over ssh
I try to list the contents of my sdcard using kdeconnect. As I understand it, this is done using an ssh connection (sshfs).
When I try to list the contents of the sd card on my computer, e.g.

```<code>ls /run/user/1000/aa321541a9e62340/storage/xxxx-xxxx
</code>```

I get an Operation not permitted, but listing the contents of any subfolder e.g. /run/user/1000/aa321541a9e62340/storage/xxxx-xxxx/Music works without problems. Now I read that this is most likely due to an android permissions problem (Can't show the content of /sdcard of my Android phone from Ubuntu's Nautilus or FileZilla via sftp).

On android, the permissions of /storage/xxxx-xxxx show as

```<code> drwxrwx--x root everybody
</code>```

When I do chmod o+r /storage/xxxx-xxxx as root this seems to be ignored.

Can someone tell me what I can do in order to be able to list the contents of my sd card over ssh?


问:
How to fix Bluetooth disconnecting frequently?
I have a Nokia 6 with Android 8.1.0 and a Bose QC35 II headset. It has recently started disconnecting frequently, from approximately every 10 seconds to every two minutes or so, seemingly getting more frequent over time. The batteries are both near full, and the headset is the only Bluetooth device paired with my phone.

So far I have tried

restarting both devices,

removing the pairing and re-pairing,

toggling Bluetooth off and on again.

clearing the Bluetooth app cache and storage and

resetting all network settings in Settings - System - Reset options.

While typing this the device has reconnected at least five times. I was not transferring files or audio at the time. It happens in public and at home, where there are only two other Bluetooth-capable devices.

The sound is often choppy when it does work, so it's as if the signal is terrible even though the devices are less than a meter from each other.

When connected to my PC the sound is fine and the connection is stable for hours.

Edit: This no longer happens with Android, but I think it has something to do with the connection type. There is only one connection type which gives even close to reasonable sound quality, the other one crackles and spits and emits irregular "call from: [nothing]" garbage.


问:
Is there a ROM of Android 8 or higher for the ASUS_X00ID Asus 4 Max?
Does anyone know if there is a ROM of Android 8 or higher for the cellphone Asus 4 Max?

If it does not exist, will be an official update for this model of cellphone?


问:
Keep WhatsApp backup in Google Drive
In November 12th 2018 WhatsApp will be deleting old backups in Google Drive, and they will take no space in your Google drive.

I don't mind my backups taking space in Google Drive, but I do not want them deleted. Is there any way to preserve them?

Title: Keep WhatsApp backup in Google Drive


问:
Does factory resetting a Kindle Fire remove parental controls, and if so, how to secure it?
If deregistering or a factory reset removes parental controls, what is to stop my teen from doing this to remove my oh so horrible restrictions?</p>


问:
Does LineageOS + microG pass SafetyNet?
I've recently bought a Xiaomi Redmi Note 4 with the intention of installing the LineageOS + microG distribution. When reviewing and researching which apps I need to install, I realized that at least one of the apps I need, which is a two-factor app for my credit card, requires the phone to be able to pass the (new) Safety Net check that Google added to its Android services.

I'm currently waiting for Xiaomi to finish the countdown allowing me to unlock the bootloader. In the meantime, can anyone tell me whether or not I can use apps requiring Safety Net on that ROM? Infos I found when googling are unclear and contradict each other (1, 2, 3, 4, 5). I'm not currently planning to root the device or use XPosed or anything similar, and I'm fine with possibly having to relock the bootloader. From what I've seen, the LineageOS + microG distribution includes something called the DroidGuard helper, which emulates or implements the Safety Net features, but it seems to me to depend on the device, the LineageOS version (I'm planning to install 15.1) and patch level, and the whims of Google whether or not the checks pass.

In short, the question I have is:

On a Xiaomi Redmi Note 4, running LineageOS + microG as offered on the project webpage, will I be able to use an two-factor credit card app like I linked above that requires Safety Net?

Title: Does LineageOS + microG pass SafetyNet?


问:
Detecting a Bad File
I have an LG STYLUS 3 phone and suspect that it may be remotely controlled or linked to another person. What do I look for to know whats up?

Title: Detecting a Bad File


问:
Troubleshooting google maps history
Google maps history worked perfectly with my old phone.

Now I have a new one and maps history worked for the first few days, then it started to behave randomly: when it works the data is correct, but most of the time it does not track anything.

If I open maps and use the gps it finds my position immediately, but even doing so the tracking is not triggered.

I already tried to deactivate and reactivate it and google play services, as well as clear the cache both for maps and play services.

I checked battery optimization and set maps and google play services to manual mode, setting them in the most active status possible.

It seems that if I restart the phone for a few hours the tracking is correct, then it stops.

I already contacted the phone manufacturer (Huawei) and made all the suggested steps (clear cache) I did not perform the factory reset that they suggested as last resort because the phone has less than 2 weeks.

I think that some battery optimization on the phone (p20 PRO) kills some process needed for maps history, that's why restarting the phone fixes the problem for a few hours.

Can you suggest me some further troubleshoot step?

I also considered to use tasker to force the execution of some process in order to keep alive the needed services but I would need some advice about what to call to keep alive the history.

Title: Troubleshooting google maps history


问:
Virtual Router software is keep on disconnecting
I'm using the Virtual Router from my laptop to connect my android mobile through WIFI. It's connecting properly but the connection is not extending more than 5 - 6 minutes. Is i have to change any settings in the mobile? OR is any other software providing this kind of service. I have SAMSUNG Young Model number : GT-s5390, Android Version : 2.3.5. </p>


问:
Is Wear OS the way to go for a programmable watch?
I had a hard time finding the right Stack Exchange site to post this on but here it is.

I have a Polar watch, the problem is its lack of customizability. I am therefore looking for a programmable watch that has GPS capabilities. This would let me take control of the watch's interface.

I have looked into Wear OS and it looks promising. I not sure however which watch is compatible with this OS...

I have found this watch Zeblaze THOR PRO. If I come to buy this watch, will I be able to program my own app and implement it on this watch?


问:
How to always show the status bar?
All is in the title: I want to always show the status bar, even in fullscreen mode (basically, I want a deactivation of the fullscreen mode). Ideally, I would like to display it in portrait mode when I am holding my phone in landscape mode.

The reason is because I have a notch and I do not like it visually, so I would like to use it as a permanent status bar.

I searched on the Internet, in the play store, but I found nothing so far.

For information, I am using the oneplus 6 with android 9.

I read this question: Always Show Navigation Bar Nougat / Disable Immersive Mode but it is about an older version of android.

EDIT: the latest Android version (10) made it worse. Now this isn't even possible to keep the bar black.

Title: How to always show the status bar?


问:
When I click "enable secure and erase" in Find My device it says "request sent", but nothing happens
I'm trying to enable remote locking and wiping for a phone. When I go to https://www.google.com/android/find  and click on “enable secure and erase” then it says "request sent", but I see nothing on the phone, no notification.

The strange thing is I can ring the phone via the web interface, so it reaches the phone, but I cannot enable lock and wipe, because I get no notification on the phone after "request sent". Why can this be?


问:
xt1527 in boot loop with usb debugging disabled
a couple days ago my xt1527 started acting weird. Gapps started to crash out of nowhere. Today, every app that I tried to open crashed 2 seconds after, so I turned my device off to reboot and see what happened. Well, nothing happened. First it was stuck in the motorola animation but then I turned it off and on again, and it got stuck in the motorola logo (before the animation) and I couldn't turn it off at that point cause it rebooted all the time. When the battery died I charged it for a while and then I was able to enter the recovery mod (actually I think it's the fastboot mode and from there you can access the recovery). I really don't know what to do because literally everything requires adb and hence usb debugging as well. I couldn't find anything to do that didn't require that, I have already downloaded the stock firmware in order to flash it with a script that I found in xda but it clearly didn't work (even though I had already used it with a moto g 1st gen that didn't have usb debugging enabled either). My question is: is there anything I can do to turn the phone on without enabling usb debugging? If not, is there any way to enable usb debugging without turning the phone on? Thanks


问:
Recover chrome tabs from tab_store0
I usually have a lot of tabs open in my android's Chrome. Today i've opened Chrome and instead of it loading all my tabs it just displayed a new blank tab.

I'm trying to recover them. Most of them were opened a long time ago (>1 year) so it is unpractical to scroll through history to find all of them again.

I've read on this post that i can try replacing tab_store0 for an old "tab####" file. Indeed in data/data/com.android.chrome/app_tabs/0 there was a tab2131 file that is 104kB so it probably holds my lost tabs.

The thing is that even after closing chrome (force stop/kill cached process) and renaming tab2131 to tab_store0whenever i open Chrome it displays just a single "new tab" and the 104kb file is gone. (I have a backup, of course)

Questions:

Is there any way i can make Chrome actually read my tabs from that file?

Is there a way to decode that file? I tried opening it but it is unreadable.

What i've tried to decode the file

I've seen in this post how can i export the list of open chrome tabs some commands. But i'm new to shell/bash and all this commands stuff so i'm a little bit lost.

after running LC_ALL=C grep -a -o 'http[[:print:]]*' tab_state0 on the adb shell i get no output and opening the file it is still unreadable.

This answer suggests a command to decode the file but i'm not sure how to ru nit. I saved it as a "tabScript.sh", put it on the same folder as the tab_state0 file and ran sh tabScript.shbut got a lot of errors

```<code>...
: not foundh[19]: while
: not foundh[19]: }
: not foundh[19]: do
 ,0()
: not foundh[19]: done
(repeats)
...
</code>```

i've also tried the sed -i "s/.\{6\}http/\r\n\r\nhttp/g" tab_state command and it runs normally but the file is still unreadable

Title: Recover chrome tabs from tab_store0


问:
What are the technical reasons behind the difficulty in using an SD card with Android 4 or later?
When Android was new, you could easily put what you wanted on your SD card.  Pictures, apps, data, etc.

Progressing through Android 4, 5, and 6 (what I am familiar with), Google implemented various seemingly antifeatures to make things difficult for a user who wants to use the SD card for main, but still removable, storage.

What are the stated reasons behind this?  What problems are they trying to solve?  Why was this considered a good solution?

A great answer will have technical and nontechnical explanations.  For example, how do you explain to Aunt Suzie that she can't use that shiny 200GB SD Card she got on sale from Amazon?


问:
Permission Denied on injected /sbin Scripts
I have an android device.. and Honor View 10... L04 version (US).  I have a set of tweaks I am injecting into my kernels ramdisk, that all fire off without issue when I adb shell in and manually run them.

The issue I am finding, is when I setup the services to run in a *.rc file, I am getting a "Permission Denied" error on all of them.

```<code>12,8553,14938568,-;[pid:1,cpu7,init]KEVS LATE-INIT Tweaks Fired - Turned of ZRAM and Swapinit: starting service 'kev_swapoff'...
5,8559,14939392,-;[pid:379,cpu4,init]audit: type=1400 audit(1538398511.359:3): avc:  denied  { transition } for  pid=379 comm="init" path="/sbin/kev_swapoff" dev="rootfs" ino=3170 scontext=u:r:init:s0 tcontext=u:object_r:shell_exec:s0 tclass=process permissive=0
11,8560,14939422,-;[pid:379,cpu4,init]init: cannot execve('/sbin/kev_swapoff'): Permission denied
14,10535,16594177,-;[pid:1,cpu7,init]init: starting service 'kev_rib'...
14,10536,16594696,-;[pid:1,cpu7,init]init: starting service 'kev_wl'...
14,10537,16595275,-;[pid:1,cpu7,init]init: starting service 'kev_tweaks'...
14,10538,16595642,-;[pid:1,cpu7,init]init: starting service 'kev_initd'...
11,10562,16627655,-;[pid:651,cpu2,init]init: cannot execve('/sbin/kev_rib'): Permission denied
36,10565,16628234,-;[pid:426,cpu2,logd.auditd]type=1400 audit(1538398513.047:39): avc: denied { transition } for pid=651 comm="init" path="/root/kev_rib" dev="rootfs" ino=3171 scontext=u:r:init:s0 tcontext=u:object_r:shell_exec:s0 tclass=process permissive=0
11,10579,16643981,-;[pid:654,cpu2,init]init: cannot execve('/sbin/kev_initd'): Permission denied
11,10580,16644195,-;[pid:653,cpu7,init]init: cannot execve('/sbin/kev_tweaks'): Permission denied
11,10581,16644348,-;[pid:652,cpu0,init]init: cannot execve('/sbin/kev_wl'): Permission denied
</code>```

My *.rc file contains:

```<code># Kevp75s Tweaks
on early-init
    write /dev/kmsg "KEVS Tweaks Fired - Set Governor"
    write /sys/devices/system/cpu/cpufreq/policy0/scaling_governor "interactive"
    write /sys/devices/system/cpu/cpufreq/policy4/scaling_governor "interactive"

on boot
    write /dev/kmsg "KEVS Tweaks Fired - Set Governor Settings"
    # force system to be the owner
    # this section is too long to post here...

on late-init
    write /dev/kmsg "KEVS LATE-INIT Tweaks Fired - Turned of ZRAM and Swap"
    start kev_swapoff

on property:sys.boot_completed=1
    write /dev/kmsg "KEVS Tweaks Fired - Cache Tweaks"
    write /sys/module/dm_bufio/parameters/max_cache_size_bytes 71061504
    write /sys/module/dm_bufio/parameters/peak_allocated_bytes 40079360
    write /sys/module/fuse/parameters/max_user_bgreq 1022
    write /sys/module/fuse/parameters/max_user_congthresh 1022
    write /proc/sys/vm/swappiness 0
    write /dev/kmsg "KEVS Tweaks Fired - Networking Tweaks"
    write /sys/kernel/ipv4/tcp_rmem_def 1048576
    write /sys/kernel/ipv4/tcp_rmem_max 2097120
    write /sys/kernel/ipv4/tcp_rmem_min 524288
    write /sys/kernel/ipv4/tcp_wmem_max 4194240
    write /dev/kmsg "KEVS Tweaks Fired - RIB Applied"
    start kev_rib
    write /dev/kmsg "KEVS Tweaks Fired - WL Applied"
    start kev_wl
    write /dev/kmsg "KEVS Tweaks Fired - TWEAKS Applied"
    start kev_tweaks
    write /dev/kmsg "KEVS Tweaks Fired - Init.d Started"
    start kev_initd

service kev_swapoff /sbin/kev_swapoff
    class main
    user root
    group shell
    oneshot
    seclabel u:object_r:shell_exec:s0

service kev_rib /sbin/kev_rib
    class main
    user root
    group shell
    seclabel u:object_r:shell_exec:s0

service kev_wl /sbin/kev_wl
    class main
    user root
    group shell
    seclabel u:object_r:shell_exec:s0

service kev_tweaks /sbin/kev_tweaks
    class main
    user root
    group shell
    seclabel u:object_r:shell_exec:s0

service kev_initd /sbin/kev_initd
    class main
    user root
    group shell
    oneshot
    seclabel u:object_r:shell_exec:s0
</code>```

I am assuming my seclabels are incorrect, but I'm not 100% sure about that.

What can I do to fix this, so my scripts run properly?

UPDATE

Changerd the seclabel to seclabel u:r:init:s0, and now my error log changed... so I think I'm getting on the right track....

```<code>12,8545,16210571,-;[pid:1,cpu6,init]KEVS LATE-INIT Tweaks Fired - Turned of ZRAM and Swapinit: starting service 'kev_swapoff'...
11,8549,16211151,-;[pid:378,cpu7,init]init: cannot execve('/sbin/kev_swapoff'): Permission denied
14,10451,17738830,-;[pid:1,cpu5,init]init: starting service 'kev_rib'...
14,10453,17739257,-;[pid:1,cpu5,init]init: starting service 'kev_wl'...
14,10454,17739593,-;[pid:1,cpu5,init]init: starting service 'kev_tweaks'...
14,10455,17740356,-;[pid:1,cpu5,init]init: starting service 'kev_initd'...
11,10477,17763122,-;[pid:627,cpu2,init]init: cannot execve('/sbin/kev_initd'): Permission denied
11,10505,17765930,-;[pid:624,cpu2,init]init: cannot execve('/sbin/kev_rib'): Permission denied
11,10509,17775024,-;[pid:626,cpu2,init]init: cannot execve('/sbin/kev_tweaks'): Permission denied
11,10510,17775634,-;[pid:625,cpu2,init]init: cannot execve('/sbin/kev_wl'): Permission denied
14,10527,17795806,-;[pid:1,cpu4,init]init: Sending signal 9 to service 'kev_rib' (pid 624) process group...
14,10529,17796386,-;[pid:1,cpu4,init]init: Sending signal 9 to service 'kev_wl' (pid 625) process group...
14,10531,17822357,-;[pid:1,cpu4,init]init: Sending signal 9 to service 'kev_tweaks' (pid 626) process group...
</code>```


问:
Android Venmo App - Top Friends Algorithm?
I'm a heavy venmo user and I'm wondering how they determine your so called "top people" when you start to make a payment. I see people I haven't sent money to in close to a year, people I'm not friends with anymore, and people I've exchanged probably a dollar with. Meanwhile, my roommates and girlfriend are so far down the list it's not even worth scrolling, so I just type their names every time.

I don't think it's by:

Most recent transactions

Amount of money exchanged

Largest single transaction

Likes or comments

That's just judging based on my personal knowledge of my friend list.


问:
KitKat exploit for reading fils in /data
My Motoroa Droid MAXX  is running a version of Android that has no rooting method. All I want to do is read Chrome's backed up file of tge list of open tabs. Does Android 4.4.4 have any known exploitthatcan get me read access to the files in /data? Remember, this doesn't need to be a vulnerability through which I can gain root access.


问:
How can I find out which app is randomly displaying fullscreen ads?
My mom's phone (a galaxy model) has developed the issue that randomly, ads will show during normal use which are not connected to the app being used.
The ads occupy the entire screen and can be closed by clicking an X mark in the corner. If this was a computer, I would assume a virus/adware or some other malware, but I've never heard of this on an android phone.

I uninstalled all apps whose purpose was doubtful, but still the issue occurs.

How can I figure out which piece of software is doing this, preferably without downloading the developer tools on my computer and figuring out which logs to search?


问:
Can the vibration intensity be changed for the Samsung Galaxy J3?
I am trying to maximize the vibration intensity on my Samsung Galaxy J3. I can change the vibration pattern, but I cannot find the setting to change the vibration intensity.

Is there an inherent limitation for the J3 or am I missing something?

The model number is SM-J320W8 and the phone is running Android 7.1.1 with Samsung Experience Version 8.5.

I did a quick Ctrl-F search in the manual, but couldn't find anything.
Manual:  SM-J320W8 Manual

Here is a screenshot of my settings page:


问:
Cannot connect to mail server that requires no authentication: "invalid username / password"
I just picked up an Android tablet running 3.1 and am having a nightmare of a time configuring the email settings properly. It's quite embarrassing, really. This is my issue:

I have several POP3 email accounts from domains that I host. I am able to configure the android tablet to receive email from those accounts quite easily. However, I cannot get the bloody thing to connect to the SMTP server. I am in Canada, so port 25 is blocked and I need to use either 26 or 587. I use 26 on both my Linux laptop and my Blackberry. The server does not require authorization so I have that disable on both of the other devices. However, when I try to connect using the Android tablet I keep getting a server error for an invalid username / password. I have unchecked the "Require Sign In" box, so the device should not be trying to authenticate, and I have verified that the service is not asking for authentication. Yet, here I am with an authentication issue.

I know this has to be something ridiculously simple, but for the life of me I can't find it. I'm using the same settings that work on other devices and getting zero love from this tablet. I've tried using 587 and get the same response. I've been all through the settings on the device looking for another place to turn off SMTP authentication but I can't find anything anywhere other than the mail program itself. What am I missing here?


问:
Why does terminating the default messaging app close the task manager?
Whenever I close my default messaging app using my "task manager," the "task manager" closes immediately afterwards.  This does not occur when I close any other app.

I currently use Signal, but this also occurred with both the stock Samsung Messaging app and the Android Messaging app.

I'm not sure if this is specific to Samsung devices

Is this a feature?  Can I turn it off?


问:
What does the read contact permission really mean in Android 5.x?
I've been playing around with the XPosed module ProtectMyPrivaccy, and I noticed that Offline Maps requires "read contacts" permission when doing a POI (Point Of Interest) search.

I can see how someone might enter a contacts address there, though I never would have thought of that.  However, it seems the POI search fails completely when the app does not have the contact read permission.

I know they (Android/Google) grouped the permissions too large, so I'm guessing that "read contacts" really means "read stuff out of any of the myriad of databases on the phone".  Is that true?


问:
After authorizing one PC for USB debugging, how to restrict all other authorization and disable the authorization popup on Android?
After authorizing one PC for USB debugging, how to restrict all other authorization and disable the authorization popup on Android?

I just don't want to accidentally accept other PCs authorization since I am debugging over network. Thanks.


问:
Find app causing: Sending non-protected broadcast android.intent.action.SU_SESSION_CHANGED from system
I'm trying to find out what is responsible for constantly causing the following messages to be printed to logcat.

```<code>10-08 11:28:30.919  5258  5273 E ActivityManager: Sending non-protected broadcast android.intent.action.SU_SESSION_CHANGED from system 5258:system/1000 pkg android
10-08 11:28:30.919  5258  5273 E ActivityManager: java.lang.Throwable
10-08 11:28:30.919  5258  5273 E ActivityManager:       at com.android.server.am.ActivityManagerService.checkBroadcastFromSystem(ActivityManagerService.java:19162)
10-08 11:28:30.919  5258  5273 E ActivityManager:       at com.android.server.am.ActivityManagerService.broadcastIntentLocked(ActivityManagerService.java:19767)
10-08 11:28:30.919  5258  5273 E ActivityManager:       at com.android.server.am.ActivityManagerService.broadcastIntent(ActivityManagerService.java:19909)
10-08 11:28:30.919  5258  5273 E ActivityManager:       at android.app.ContextImpl.sendBroadcastAsUser(ContextImpl.java:1130)
10-08 11:28:30.919  5258  5273 E ActivityManager:       at com.android.server.AppOpsService$2.run(AppOpsService.java:142)
10-08 11:28:30.919  5258  5273 E ActivityManager:       at android.os.Handler.handleCallback(Handler.java:790)
10-08 11:28:30.919  5258  5273 E ActivityManager:       at android.os.Handler.dispatchMessage(Handler.java:99)
10-08 11:28:30.919  5258  5273 E ActivityManager:       at android.os.Looper.loop(Looper.java:164)
10-08 11:28:30.919  5258  5273 E ActivityManager:       at android.os.HandlerThread.run(HandlerThread.java:65)
10-08 11:28:30.919  5258  5273 E ActivityManager:       at com.android.server.ServiceThread.run(ServiceThread.java:46)
</code>```

PID 5258 is "system_server".

How can I do this?

I'm running Lineage OS 15.1 / Android 8.1.


问:
How to go forward/back in Deezer app?
In the Deezer Android app, when I play any music, it displays a button "play in shuffle mode". When I click, the track starts playing, but in the track window:

I can't go to a specific position in the song, the progress bar is thinnest and even when I click,the track window just minimizes.
Isn't there a progress bar where I can go to any position?

Title: How to go forward/back in Deezer app?


问:
I destroyed the bootanimation of my phone and now it's stuck in the boot screen (black screen)
So I rooted my phone (Cherry mobile flare 2) and tried to messed up with the boot animation file :3, I changed the bootanimation.zip and changed the pictures in attempt to manually change the boot animation. But after that it has been stuck in the boot animation logo because of what I did. >-< I already tried to hard reset it but it does not work. I have the stock formware here but it requires teamwin recovery but the problem is i don't know how to install the teamwin recovery on my phone because the USB Debugging is not open. Thank you! </p>


问:
Retrieve percentage of total CPU usage in android 8.0
The access to /proc/stat is disabled on Android 8.0 and the top command can't also be used. So I wonder if there are any solution to access the total CPU usage in android 8.0?


问:
Partition SD card for use on a dual boot tablet
I have a dual boot Windows 10/Android tablet device that has only 1 micro SDcard slot. I also have a 128GB microSD card that I would like to split into a 96GB partition 1 for windows and 32GB partition 2 for android. I have tried doing it using various of means through windows disk part or minitool partition but once I have successfully partitioned the sd card, when I mount it to the android OS, it automatically reformats the sd and mounts it as a 1-partition 128GB sd card... I'd like to know if what I want is possible and if so, how can I do it?


问:
Are there ways to do factory re-set on LG phone by connecting to laptop via USB?
Are there ways to do factory re-set on LG phone by connecting to laptop via USB?
================================================== ==

I did review similar questions on internet, but the links provided for adb is broken.

I have LG tribute HD 4G LTE smartphone with Android (6.0 Marshmallow). It worked good but White Vertical Lines showing up now.

I took the battery out an put it back after a while. It did not fix the issue.

This phone did not expose to water.

The bad screens display vertical lines with a white background. Has anyone else had this problem?

If I press power on button, the screen with white lines comes and screen goes black. I am not able to get to dial pad to do unlock/re-set.

Is there any way to do factory re-set, by connecting the smart phone to computer via USB?

Any idea to fix this ?

I did download android studio, but I did not find an option to do reset my phone via USB.

I did find some steps using adb command line, but I am not sure what are the adb tools required to do.

```<code>I did find android studio, installed platform-tools at

C:\Users\<user>\AppData\Local\Android\Sdk\platform-tools

adb root
throws:
adb: unable to connect for root: no devices/emulators found
</code>```

Thanks for helping.

I am not able to enable USB Debugging from my phone, because vertical white lines is not allowing me to use phone screen

```<code>Here are the adb commands/results, I tried.

>adb devices
List of devices attached
* daemon not running; starting now at tcp:5037
* daemon started successfully

>adb devices
List of devices attached

>adb shell
error: no devices/emulators found
</code>```

Thanks for your guidance.


问:
Disabling vibration when fingerprint authentication fails
I'm running Android Nougat 7.0 on a Wiko upulse lite phone. I would like to know whether there is a way to disable the vibration that is produced when fingerprint authentication fails. I ask because I find vibrations distracting and can read the red text saying the authentication has failed when this happens and would rather simply go with that.

Thanks.


问:
How top copy files from Android (8) to PC, when large number of files in folder?
I recently bought a NAS to store family photos, and I've just realised that my phone (Pixel XL) no longer supports USB Mass Storage, but just MTP.

I've got about 7400 files in my DCIM folder, and it seems impossible to browse this folder properly in either Windows10 or Unbuntu.  Windows takes and age and then explorer.exe simply crashes.  Ubuntu also takes forever and isn't really usable.

Is there anything that can help here?  (I've seen solutions using debugging mode but, is there a 'normal' solution?)

Thanks


问:
easy and simple way to test/automate Android app
There is an app that I need to automate. I only have the APK, I do know there is UIAutomator, but there is not much info about how it can be used with an APK (no source code). Are are some tools available to automate a simple process on Android?</p>


问:
Create a private folder in Android: set the SELinux attribute of a folder in external storage
There are quite a few apps that require read and write access to the external storage, which gives them access to the whole /sdcard directory. But since that is also the only storage the user themselves have access to, is there any way to create a folder there under /sdcard (maybe even inside /sdcard/Download/) that is restricted to a few apps specified by the user such that no other app has access to it?

I imagine this is something possible within the scope of SELinux, and might only be possible to set up with root access, although should still be usable without enabling root access once set up properly.

According to 1 and 2, it seems mkdir /sdcard/private then create a new context user_private for it that is also assigned to trusted apps one by one. But I am not sure exactly how.


问:
Is there a command in /system/bin to wipe cache?
Is there a command in /system/bin to perform cache clearing?</p>


问:
Unable to turn on Nook HD+ after third trim attempt (Cyanogenmod 10.1)
After initiating my first trim attempt, I left my device alone for a bit assuming that it might take awhile to complete the process. Upon returning to the device, however, it would not power on. After trying the basics without success (holding the power button + home button to reset, etc.), I left the device alone for awhile and later found that the device had booted itself up and was running properly again (though the trim didn't work). I trimmed again after booting up and the operation succeeded almost immediately, fixing the lag issues I was having.

It's now about a month later and I attempted another trim which froze my device (no screen activity, system clock unchanging). After about 15 minutes of waiting for a change, I powered down the device, plugged it in, and went to sleep. Attempting to power the device on has been impossible, and plugging in the charger simply shows a green light (even after unplugging the device for awhile). If I hold the power button for about eight seconds, the green light turns off until I press the power button again.

When plugged into my PC via USB cable, Windows continually sounds the device connect and disconnect jingles and says "the last USB device you connected to this computer malfunctioned, and Windows does not recognize it." This stops if I hold the power button as previously mentioned.

After leaving it alone for awhile, I found that the device had randomly powered on, but was stuck at the initial Nook loading screen. Powering it down left me in the same position as before.

I'm all ears if anyone has a clue on how I can proceed, or where I can ask for knowledgeable support. Thanks!


问:
In Android, got click-jacked into clicking "Allow" for a pop-up that flashed for 0.1 seconds. How do I find out what I allowed?
In Android, I was using Google Chrome. I clicked on a sketchy website which popped up a new chrome tab. I pressed the tabs button which caused me to view the various tabs. Right as I was clicking on an "X" of the top-most tab, a pop-up appeared with the "Allow" button exactly under my index finger so I accidentally pressed "Allow". I had no idea what the pop-up said, except that there were two blue word buttons, and I clicked the right-most one. What did I accidentally allow and how do I disable it? </p>

OwnerDisplayName: pete


问:
Network and Call not working in particular region, mobile settings issue
I am using Redmi Note 4 and Jio sim.

My internet and calls are not working inspite of network available. Other people living near me is able to use internet well at that place.
When I move about 70 meter away from my home, internet and calls are working quite fine. Internet and calls are working everywhere, except at my home. Means problem is under particular tower.

At my home, I changed my sim card and inserted in my friend's Redmi note 4 mobile, my internet and calls started working fine. But her jio sim inserted in my Redmi note 4, then it is not working. It means, problem is not in SIM card  but in my mobile setting.

Tried Solutions:

I thought I messed up in ##4636## settings, but I have no options to make it default setting. So, In mobile setting, I made default network setting.

Final solution:

I formatted my mobile completely, three times, so that all settings get as it was in new mobile. But still the problem is unsolved.

Please let me know, what should I do ?


问:
WhatsApp using microphone in the background
Got a notification today that whatsapp is using microphone while not using the phone.

To view it again I got under  settings/lock screen/app permission monitor/permission history and during the day whatsapp used contacts several times.
I am using samsung s7 (sm-g930p), running on android 8.0.0 (august 1 2018 security patch level)

Can someone explain what is happening? Is anyone else experiencing this?


问:
Moved files within Internal Storage and file can't be accessed from android
I have Moto G S5 (Android 8.1). I connected it to my laptop (Ubuntu 18.04). I moved some files (about 4 Gb) from a folder in internal storage to root folder of the internal storage.

Transfer happened succesfully. But the File manager of android doesn't show those files in the root folder. And I can access those files from my laptop, but when I try to open it. It shows Unknown MTP error. The SD card capacity when viewed from Android has decreased by 4 Gb (same as those files), but when I see the SD card capacity through Ubuntu the capacity remains intact.

Please suggest me some steps to recover those files. I tried copying those files back to the original location, but I get the same MTP error.


问:
how to delete hotels.com app?

Possible Duplicate:

  How can I uninstall applications that are locked by phone vendor?

I have an app on my phone called hotels.com. I can't seem to remove it at all.
I tried going to Application screen > Edit but this app doesn't have a little minues next to it so I can't remove it this way.
I also tried this method:
How to delete an app installed with Amazon Appstore?

but the Clear Data and Uninstall buttons are greyed out.

Title: how to delete hotels.com app?


问:
My rooted samsung galaxy s4 is soft bricked, Can I save it?
The device has been rooted since shortly after I bought it new years ago. I've had very few problems since... which is why it's never been replaced.

When I start the device it gets stuck at the splash screen with the sprint logo.

I can get the device to "download mode" but I don't know what to do once there and I'm not sure I can do anything from here.

I can get the device to "android system recovery."
I've wiped the "cache partition" but the problem remained.
I'm not sure what else to do from here.

I'm trying to salvage the data on the internal storage.
I'm pretty sure I could successfully "wipe data/ factory reset" and get it to "function" again but that's not the priority.
I'm going to replace it regardless of success or failure.
Data recovery is the priority here. (pictures and videos of my young children as well as less important stuff.)

I have an old laptop with an old version of ubuntu I can use or a newer one with windows 7 to work with. I mention this in case it makes this easier to help?

Thank you very much if you try to take a stab at this or refer someone that might!


问:
Is it possible to save an encrypted data partition so that I can decrypt it later?
I have a rooted samsung galaxy s4 sph l720 with an encrypted data partition.
It's currently a soft brick.
I'm confident I could wipe the device and start over from scratch but then I'd lose everything in my internal data partition.

I have TWRP installed and the data partition reads as 0mb.
I know the password to access the data from the normal ROM startup but that's not an option in TWRP recovery.

I don't really care if I salvage the device. I have another device functioning as a phone right now.

I just can't believe there's no way to save this data.

Does anyone have any suggestions?


问:
How to ignore specific ssid from scanning?
I would like to block neighbour wifi named 'akx" from scanning. that means  my cellphone not show this wifi network when finished scanning.</p>


问:
Android Automatically open a Webpage using Chrome on boot
I have an Android TV box plugged on a TV in a waiting room.

I would like to have a web page open on Chrome automatically when I turn it on.

Is it possible to do?

Thanks

OwnerDisplayName: mrelva


问:
How do I keep the Spotify Android app from hogging all free space for its cache?
The Spotify for Android app uses every last byte of space it can find on my device for its cache, and I frequently have to delete /storage/self/primary/Android/data/com.spotify.music/files/spotifycache/Storage to reclaim the space. The last time I did it was about a month ago, and now it's 11GB again (12GB available space in total on that device)

I pay for Spotify and would very much rather not serve as their CDN so they can save a few cents on bandwidth while rendering my device unusable.

How can I prevent Spotify from writing to that directory altogether? I tried changing the permissions to 400 but the app fixes the permission and promptly resumes eating up all free space.


问:
signing custom OTA update .zip file
We have a kiosk application that needs to be able to periodically do OTA updates using our self-made OTA update .zip files.

Our custom OTA update .zip file have the following files:

```<code>/data/misc/adb/
        adb_keys
/system
    /priv-app/
        MyApp.apk
    /vendor/
        build.prop
/META-INF/com/google/android/
        update-binary
        updater-script
</code>```

We have used many different tablets like Galaxy Tab 3, Galaxy Tab 4 and Yoga 3, the only thing we have had to do is to replace the mount command arguments inside updater-script with the right ones for each tablet.

Of couse, since we do not have the release keys of each of these tablets, we have had to replace every Recovery with its own TWRP Recovery replacement, in order to be able to flash our custom OTA update file. All this worked like a charm every time.

Now we bought new tablets from a chinese manufacturer and when we tried to flash our OTA update package we got the following error:

```<code>Verifying update package...
E:footer is wrong
E:signature verification failed
Restarting adbd...
Installation aborted.
</code>```

From that message is clear that error occurred because the OTA update .zip file was not signed. So, I asked from the manufacturer the release keys and the instructions in order to sign our OTA update .zip file and being able to flash it.

The problem is that the manufacturer's engineers have no clue of how to do this (signing OTA update files so they don't get rejected by their Recovery), which seems like a very common problem because we asked in multiple manufacturers and nobody knows how to do this.

So, I would like to ask for your help since I cannot find the instructions on how to sign it. Anybody knows how to do it?

Title: signing custom OTA update .zip file


问:
Termux says file does not exist but it does
A while back I installed nano on Termux and it worked fine, but when I accidentally tried to copy a file into a nonexistant directory at nano's location, nano wouldn't run. I checked and the executable is still there with the object code and all. If I chmod -x nano and run nano, it says nano has wrong permissions but using chmod +x nano and running nano says there is no such file or directory. The same thing happened when I tried installing Haskrll stack. First I tried installing a non-ARM version accidentally, but when I found the correct ARM executable, it had the same issue as nano. I've looked around for solutions and some answers to other questions say the issue could be trying to run from sd card but it used to work so I don't think that's it and don't know of a way to check. Also, all other executables in nano and stack's directory (and all other directories) work just fine.


问:
Security related concern for my android phone
i purchased an android  mobile and had my google account set up but the device later went faulty and would not turn on, so now I got the same brand phone exchanged. meanwhile I have also set up my google account to delete itself if at all my faulty phone comes up as the seller took it back. Should I wait before setting up my new phone or will it cause my new phone to not setup properly. How does google's device security detect my account login from a device based on the brand or OS or based on MAC address?. </p>


问:
Why does Samsung's Always On Display not work on some not so old Galaxy devices?
Samsung's Always On Display (AOD) has minimum and targeted API 24 i.e. Android Nougat 7.0. It runs on all the latest Galaxy smartphones including, but not limited, to A5 (2017), A7 (2017) and even the much older devices - S6 and S7.

My Galaxy A9 Pro (2016) got updated to Android Oreo 8.0 today with no AOD whatsoever. It had Marshmallow out of the box (S6 had Lollipop). So, I tried sideloading the AOD's untouched APK I obtained from a trusted source. It failed to install, without giving any error message.

Whereas, on the previous Nougat 7.0 OS, I had successfully sideloaded the APK though it never worked. Also apparently there already exists a package with the same name as the APK I try to sideload but maybe it is disabled permanently. So, the quick-install-after-a-reboot trick worked sometimes. It did add the Always on Display option in the Settings app but it always crashed when opened.

What's the reason behind this behaviour? An app which is supposed to run on lower API 24, doesn't work on API 26 even though the manufacturer is same and the hardware isn't much different than the above listed Galaxy smartphones.


问:
Unresponsive Samsung Galaxy S6 phone, even to soft reset (volume down + power)
I'm having some trouble with my Samsung Galaxy S6 not responding.

I can't remember which Android version it has; it's whatever it came with in 2015, so it's Marshmallow or earlier. The phone is not rooted, not modified. I think that USB debugging is enabled.

The phone is showing a slowly blinking blue notification light.

It does not respond to pressing any of the keys, does not respond to soft reset (volume down + power), does not respond to hard reset (volume up + power + home).

When plugged into a computer via USB cable the computer does not give the option to connect to the phone.

Running "adb devices" at the (Ubuntu) command line with phone connected returns blank list of devices.

What are my options? Is there some other reset option I haven't yet tried?


问:
samsung j7 clock in unlocked screen
The lock screen has a large clock in the lock screen, which disappears when unlocked and leaves only a tiny display top r/h corner. How do I retain a larger clock in the unlocked screen? </p>

Title: samsung j7 clock in unlocked screen


问:
Why my phone is sending some other phone number as my caller ID and for SMS?
I've been using LineageOS 14.1 on ZUK Z1 for quite a while now. One problem I am facing is, sometimes my phone sends text messages from some other number which I don't even know. This also happens to the calls, my phone number is replaced with someone else's number.

Couple of days ago I did a fresh install of LineageOS 15.1 hoping this will fix the issue with my phone, but that had some other problems attached with it. I wasn't able to connect my phone to PC through USB cable, lots of apps were crashing making phone unusable. I had to go back to LineageOS 14.1 but this is not the main question. I wanted to ask what can be the issue which is causing the phone to use someone else's phone number as my phone number while calling or for the SMS purposes?

My friends pointed this thing lots of times and also referred the numbers through which my SMS or call was delivered. After calling those numbers I got to know they are people within my area at the time of my messages being delivered from their numbers. This problem is not on some specific region, I travel a lot and this happens no matter where I am which makes it clear it is not fault in my area's network coverage.

I tried searching for problem like this but I wasn't able to find any single, that's why I am posting this.

There is also another problem which I forgot to mention earlier, my phone restarts on its own sometimes.

Any help would be appreciated!

By the way Lineageos 14.1 is basically Android 7.1 and Lineageos 15.1 is Android 8.1.


问:
My LG X Charge phone dropped in water, and I had some trouble after fishing it out! Help?
OK, so I accidentally dropped my LG X Charge (Android) smartphone in water, & I fished it out, but I had some trouble & fumbling & rigamarole to go through afterwards:

I had trouble getting the phone cover & case off, & I struggled for about a minute to remove them

The phone was turned on when it fell in the water, & after I fished it out, the home screen turned on like normal, & I could access what I had been doing for a few seconds, until the screen turned black with little gray stripes; this happened a couple of times, until the screen didn't turn on at all (but the phone still made noises & things like nothing had happened)

I then remembered that I should have kept the phone powered down as soon as it had been retrieved from the water, & I pressed the power button for a few seconds to turn it off
3B. However, my phone buttons are very sensitive, & even when I just barely grazed the power button without meaning to touch it, the phone would power back up, & I'd have to turn it off again; this happened a few more times (but not all consecutively) until I finally managed to get it in a Ziploc bag full of rice (see below)

I gently shook the phone to get the water out, per the instructions that one website provided; I managed to get some of the water out, but not all of it, I fear

My smartphone is one of those that doesn't have a removable battery cover, so I was unable to remove that to get rid of any water that might be trapped underneath it

I know the LG G6 smartphone is waterproof, but I don't think the LG X Charge is...

I wasted valuable minutes calling my daddy on the phone, & telling him what happened

With the help of my grandma, I put the phone in a bowl full of rice...but I initially forgot to put it all in a Ziploc bag, & I had to go back & fix that!

Not only that, but at least one website I saw, said that your phone should be facing screen up at all times...& I realized too late that I occasionally had my phone facing downwards while I was tending to it post-retrieval!  Not to mention, it had been facing downward in the bowl of rice before I transferred it all into the Ziploc bag!

All in all, from the time I fished my phone out of the water at approximately 8:50 A.M., it took 17 minutes for me to go through nearly all of the above issues...with the phone & rice finally transferred from the bowl to the Ziploc bag no later than 9:40 A.M.

Tell me the truth, folks: What are the chances that my phone will make it out all right when I check on it at 9:30 A.M. on Monday morning? I'm really worried... :-(


问:
Wi-fi not working on Android at home
My wifi is not working on my Android 4.4 tablet, but the tablet says it is  connected (although the icon is red rather than the usual white) and the router says the tablet is connected. The tablet gets an IP of 192.168.1.5

```<code>1|root@rk3026:/ # ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: sit0: <NOARP> mtu 1480 qdisc noop state DOWN
    link/sit 0.0.0.0 brd 0.0.0.0
3: ip6tnl0: <NOARP> mtu 1452 qdisc noop state DOWN
    link/tunnel6 :: brd ::
4: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether ac:a2:13:33:de:96 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.5/24 brd 192.168.1.255 scope global wlan0
    inet6 fe80::aea2:13ff:fe33:de96/64 scope link
       valid_lft forever preferred_lft forever
5: p2p0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DORMANT qlen 1000
    link/ether ae:a2:13:33:de:96 brd ff:ff:ff:ff:ff:ff
root@rk3026:/ # ip r
default via 192.168.1.1 dev wlan0
default via 192.168.1.1 dev wlan0  metric 304
192.168.1.0/24 dev wlan0  scope link
192.168.1.0/24 dev wlan0  proto kernel  scope link  src 192.168.1.5  metric 304
192.168.1.1 dev wlan0  scope link
</code>```

The router has IP 192.168.1.1. For some reason the router identifies two connected devices with IP 192.168.1.5 and 192.168.1.2, but changing the IP of the tablet manually to 192.168.1.2 does not help.

For comparison my laptop works in the network through wired ethernet

```<code>$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 5c:26:0a:15:4a:f8 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.4/24 brd 192.168.1.255 scope global dynamic noprefixroute em1
       valid_lft 594523sec preferred_lft 594523sec
    inet6 fe80::c497:8044:af6c:4a3d/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 26:13:0b:8f:90:41 brd ff:ff:ff:ff:ff:ff
$ ip r
default via 192.168.1.1 dev em1 proto dhcp metric 100
192.168.1.0/24 dev em1 proto kernel scope link src 192.168.1.4 metric 100
</code>```

The table can ping itself at 192.168.1.5, and the laptop can ping itself at 192.168.1.4 and the router at 192.168.1.1; but the tablet cannot ping anything else, and the laptop cannot ping the tablet. When I turn everything off and on several times, it sometimes work.

OwnerDisplayName: BeniBela

Title: Wi-fi not working on Android at home


问:
Stuck in LineageOS boot logo when installing on Xiaomi Redmi Note 5 global
I booted TWRP 3.2.3-0 using fastboot, then followed #5 unlocking fastboot to install it permanently on my Xiaomi Redmi Note 5 cause of the problematic anti-rollback from Xiaomi. Next, I installed the LineageOS zip. It shows the LineageOS boot animation but then nothing happens. Even after waiting more than 1h it doesn't boot.

Things I tried yet without success:

20181016, 20181003 and 20180926 LineageOS builds

Factory reset using TWRP

Advanced TWRP wipe with data, system, cache and dalvik cache

Disabled the installing of TWRP app after flashing

Deleted dalvin cache after flashing before rebooting

Flashing using adb sideload

Install LineageOS together with corresponding OpenGAPS Zip

Waiting ~20min in boot animation, force shutdown and start manually

What worked

MoKee booted shortly after the first try without google apps

Preparation for flashing

Before flashing, I used AIDA64 with the stock MUI ROM to make sure that the codename match:

So the whyred image is correct, which matches the information I read before buying that the global version is equal to Pro, where official LineageOS builds can be installed.


问:
How to read (or restore) files on encrypted SD card after update to Android Oreo?

My situation

I have been using the encryption of my Android phone’s external SD Card on a Samsung Galaxy J3 (2017) Duos (SM-J330F) ever since I got it. I have recently updated my OS to Android 8.0 (Oreo).

Upon restart a notification was displayed that the encrypted SD card could not be decrypted because it was encrypted on a different device (which is no true; I have been using the same device, but the OS might not be able to recognize this). It is my understanding that decryption of the SD card is not possible on any other device.

This might not be the first case where Android fails to decrypt SD card after update to Oreo.

What have I tried?

I have shutdown my device, removed the (micro) SD card, and plugged it in to my notebook. All (?) files are visible, the filenames look okay, but content is not readable. I have then created an image by running

dd if=/dev/mmcblk0p1 of=~/SANDISKSDHC.img status=progress

I have reformatted the SD card with my Android device. I have then written back the IMG file to the SD card by running

dd if=~/SANDISKSDHC.img of=/dev/mmcblk0p1 status=progress

I have loaded the SD card into my Android device and started it. Again a notification was displayed that the encrypted SD card could not be decrypted because it was encrypted on a different device...

My resources

How do I decrypt files on my SD card that I encrypted using the Settings? (doesn't seem to apply to my situation)

Encrypted SD card failed after S5 restart (different situation, but references the next)

How to decrypt a microSD card after a factory reset of the device used to encrypt it? (tried this, did not solve my problem)

Cannot open Airwatch encrypted files on SD card after Android update (no answer)

How to Read marshmallow encrypted memory card? (different situation, and I did not understand the procedure linked in the answer)

How to restore files on SD Card that was protected by Vault app? (different situation)


问:
I used "FIND MY DEVICE" feature. Now phone wont start
I went to Google Dashboard - Find My Device and tried the PLAY SOUND.

The phone got into non-responsive state.
I tried to reboot the phone, but now my phone doesn't boot.

Device is XIAOMI REDMI NOTE 4

Please let me know what should I do!


问:
How do I control how many processes run in the background on Android Marshmellow 6.0?
My tablet has a tendency to run kind of slow, and I think it's because there's too much running in the background.  How do I control how many things get started at one time?</p>


问:
LG Phoenix 3 stuck on firmware update
My LG phoenix 3 is stuck on firmware update when it was being unlocked from the network and it is showing: "do not unplug until the process is complete".

What should i do?

Title: LG Phoenix 3 stuck on firmware update


问:
What is it like to call/text on 2 of 5 bands of 4G
The phone I want (Xiaomi Pocophone F1) is only compatible with 1 Verizon band. I was wondering what it's like to call/text like this? Even if it's low quality, but I could still understand the person and speak to them and they understand me, that's all I need. EDIT/ANSWER: If a phone is only compatible with a certain network with not all the bands, you can look at a cellular map to see what bands of that provider are emitting from the towers in your area, for me, the bands that did work with my provider and my phone DID NOT work in my area, so it depends on area, and if you travel very big chance you won't have any service unless it is the most popular band used by the provider.</p>