Nexus 4 does not wake up from Sleep randomly I have a Nexus 4 running stock rom kit kat 4.4.2. There were few instances, in which when the phone goes to sleep, I see the notification light blinking indicating a new email/message, but it doesn't wake up when I press the power button. I have to soft reboot the phone {press the power button for 5 seconds to turn it off, then turn on}to use it again. This happens more frequently on some days, and some times it doesn't happen for weeks.I tried calling the phone from my land line when it is in this state, I could hear it ringing on the landline, but the phone doesn't actually ring. After rebooting, it doesn't even show a missed call. When I reboot it, the phone's battery is substantially less (down by about 10%). It started happening only since 4.3 JB update, it was fine till then.

I tried a full factory reset, and minimal apps, it worked fine. Once I installed all my apps back, this started happening again. I am thinking one of my apps is causing this and it could be an application or a bug in Kit kat/JB itself.


Is there any known bug in kitkat 4.4.2 (or >= 4.3 ) or is there any application known to cause this?
Is there any way I can look at the logs to see if any specific application is causing this.
Force wake up the phone without having to reboot it ?
You might wish to run adb logcat for investigation. But that might only be helpful if you know how to trigger the issue.

Another approach would be, as you already indicated:


start with a factory reset. You know that with a "fresh device" the issue does not happen, as described by your question
install back only a part of your apps (the ones you feel most essential), but not more than ~50%. See if the issue still happens.

Yes: the problematic app was in this batch
No: the problematic app was not in this batch

start over at 1., this time with the other half. Does the issue show up again?


If 2. + 3. are answered "No", it might as well be a combination of apps. If the issue shows up only in either 2. or 3. (but not in both cases), start narrowing down. I will assume here it was part of 3., switch items if it was the other way around:


starting over with factory-reset and installing the first half of your apps.
split the other half in two again, and repeat as above


This procedure should help you finding the culprit, while still being able to use your device and as much of your apps as possible. Of course, you could also start with factory-reset and then install each app one-by-one (which might be the safer approach) – but as the issue might not show up immediately (may even take a day or more), the above might be more practical.