[Q]Android OS

Last night, around 2am, I unplugged my phone from the charger before i went to sleep (it had WiFi on) and now when I woke up and checked it at 1:30pm the next day, I had 35% battery left! WHAT!? checked battery stats and Android OS ate up 51%! with phone idle at 12%

anyone have any idea what's going on? I have everything except WiFi turned off, GPS, Location Services, Auto-Sync, Auto-Backup, everything. I also underclocked everything via cpu master and trickster mod. I greenified facebook, viber, skype and any other app that could potentially wake my phone from deep sleep.

I checked trickster mod, deep sleep was at around 5hrs with 162mhz at around 7hrs. don't have any screenies of those since I rebooted my device right after I plugged in the charger (helps with displaying correct percentage)

I've attached a screenshot. I've never seen that kind of downar plunge in my battery stats. ever. this is the first time it's ever happened.

I'll install wakelock detector and give it a few hours. I know my phone drains around 1%/hr while idle, maybe even less.


EDIT: I already started when I took the second screenshot. I forgot to take a screenshot of the rest of my battery stats. so don't mind the time and the difference in battery percentage.

BIBUBO BCJ said:

that's kernel problem. I meet that problem before, while I'm using AK-kernel with Vanir ROM. Kernel make screen always on to increase respond for S2W and Double Tap to Wake, but also cause this problem. In Android 4.4.2 also have this issues ( Nexus 4 and Nexus 5 is an example, you can search Google for this ).

You can install Better Battery Stats to check wakelock issues, but you can't do nothing, unless you have to changed to another kernel

Click to expand...

Click to collapse

don't have S2W and knock on enabled on my kernel. I also tried those and their battery drain is nothing compared to this!

I've charged my device and now it's showing Google Search as the culprit. now looking for a solution.

BIBUBO BCJ said:

what's your kernel ?

Click to expand...

Click to collapse

Solid Kernel + Stock 4.1.2 with a few xposed modules. I've solved the problem. Had to completely turn off Google Now and blocked wakelocks from Google Play Services.

I'll give this 3 hours and see if it goes back to the 1%-1hr idle drain. Battery stats seems to have improved, I'll post my post-fix battery stats in around 5 hours just to check if the problem comes back.

aaaaaaaaaaand it's back. This time it's not Android OS but Google Play Services that's eating the battery up. I now get 2%/hr with this new problem.

I checked trickster mod and my phone is not entering deep sleep. checked wakelock detector and it showed GCMSEND as keeping the phone awake. (1h 52m out of 2h)

Anyone know a fix for this? I've currently filtered it in Wakelock Terminator and I'll see how it goes from there.

UPDATE:

22 mins in and phone is in Deep Sleep 84% of the time. filtered GCMSEND and added 2 lines to build.prop that supposedly improves deep sleep.

ro.ril.disable.power.collapse=1
pm.sleep_mode=1

Source: http://xdaforums.com/showpost.php?p=46301722&postcount=2

Will leave it overnight to see if it stays this way.