Galaxy note 8 battery drain with mobile data I've confirmed that battery drain issue in my Note 8 is because of mobile data and hotspot. I have evidence.

Here is battery usage with mobile data and hotspot ON. AOD was OFF



As you can see it shows battery usage over 7 hours going from 100% to 35%.

Here is the usage of screen. As you can see it was only on for 2 hours. As I said always on screen is disabled. That leaves 7-2= 5 hours of screen being OFF



Now here is 4 hours battery usage going from 100% to 95%. Screen was on only for half hour but mobile data was also OFF. That means my mobile data is literally draining as near as display. That's a huge amount of battery getting wasted. Any ideas? What should I do?



My note 8 is only 2 weeks old but ive confirmed and its original. Only mobile data seems to be doing bad job (battery charges fast and seems good) 

I mean even if LTE consumes high battery it should not consume as much as display. 

What is the logic here?
To be fair, I think this should be the expected result considering the device is using a lot of resources which are mostly power (CPU) hungry.


When using mobile data and additionally have mobile hotspot activated, you essentially utilising two communication radios (4g and WLAN) which themselves require considerable power.
It is mostly like there are some services running in background when there is an active internet connection. (e.g sync, silent updates etc)
This power we are talking about is coming from the battery hence it becomes very hot, just a symptom indicating it's "working very hard" to supply power to the device' resources and consequently a heavy battery drain is inevitable.
Although screen is considered to cause a high battery drain when the device is idle, its certainly not the case the the device is active and using its other hardware.


You may want to further analyse the batter statistics with other third-party tools from playstore (e.g battery drain analyser)

Also try to regulate the up-time of your mobile hotspot, to minimise battery usage.