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Android OS Battery Drain

I started my Galaxy S6 920I battery issues a long time ago and couldn't find any help without rooting or tripping knox, so here's how I went back to a normal state. I want to share my experience with you guys and maybe help someone who's desperate like me.
UPDATE: 5.1.1 India OTA came 2 days ago and my problem is solved now. No more deep sleep isues.
device: 920I on Stock 5.1.1 India (G920IDVU2COF8), Brazil on VIVO network.
problem: "Android OS" process show up eating almost 50% of my battery, even on idle. I couldn't even get through the day. If I went to sleep and just left my phone alone with wifi, data, gps off and all apps closed, I would wake up with a dead phone.
conditions: I didn't want to void Knox since I think I can still use my warranty for something, even though Samsung offers a pretty lame service here in Brazil.
background: I've read basically everything regarding this subject and nothing seemed to work for me. Wiping cache, factory resetting, nothing.
method:
STEP 1: ERASING IT ALL
My phone came with stock 5.0.2 and I updated to 5.1.1 (Trinidad and Tobago) via Odin hoping it would solve my problems. It didn't, at all.
I decided to do a full wipe and flash 5.1.1 India just to see if the problem was relying on the ROM itself
When my phone started, I added my google account, normal setup, and then started disabling the useless Samsung features like motion gestures and Wifi always scanning
I DID NOT download any app from the play store, I decided to get them back gradually in order to try to find the problem.
I started disabling every app I though it was safe to to so. Here's the list: ANTT Radio Service, ANT + Plugins Service, Brefing, Dictionary, Drive, Dropbox, Facebook, Galaxy Apps, Galaxy Apps Widget, Google Play Books, Google Play Games, Google Play Movies & TV, Google Play Newsstand, Google +, Hancom Office Viewer, Instagram, Live Weather, Memo, Messages, Messenger, OneDrive, OneNote, Peel Smart Remote, S Beam, S Health, S Planner, S Voice, Samsung Galaxy, Samsung Push Service, Skype, Hangouts
I Kept basically Whatsapp, Hangouts, Play Music, Gmail and updated them through Play Store
Downloaded Google Keyboard since I hate the samsung one
Then I went to sleep with 15% battery. Woke up with 15% battery. Good job.
STEP 2: PUTTING INTO TEST
I woke up and charged the phone until 100%. Got our of home, wifi and data off.
I commuted for 60 minutes while listening to cached Play Music songs. Made some calls. Turned data on, used some whatsapp. Battery still on 94% at the end. Seemed ok.
When I arrived at work, I decided to enable instagram and Hangouts back and check on it again. My battery was on 92%.
1 hour later, my battery was 80% and "Android OS" was at the top of draining list again. Nightmare.
Uninstalled instagram. 1 hour later I had a drop of 3% without touching the phone. Android OS still on the top.
Uninstalled Hangouts and enabled default samsung Messages app. Answered some whatsapp chats and left the phone sleeping, didn't touch it. 1 hour later, battery dropped by 2% with Android OS on top.
Restarted and wiped cache. Things went back to normal.
NEXT STEPS
It seems like there's some serious bug with the apps, but somehow there's s System bug that needs to be sweeped with a cache wiping. That's the continuous process I need to be doing on regular basis.
I wonder, would it be that simple? A simple app making continuous requests to Android System and putting it on top of the draining list, hogging all of my battery on idle for nothing?
Anyone had the same problem?

Most likely a defective battery. Return your S6 back to Samsung telling them of your extensive tests as supporting evidence and request for a warranty repair/replacement.

LG G3 acting buggy, advice?

I'm using stock Android 5.0.1 on my G3 on AT&T (D850).
Recently my phone has been really buggy. I was randomly using the web browser and then my phone started freezing up, and then wouldn't load up apps. It restarted itself and when it did half my contacts had no names.
No browser was working so I factory reset the phone but then my problems continued:
-all web browsers will still randomly crash when browsing
- apps will get a "Unfortunately, X has stopped" error. Most common is Google Play Services (which I've uninstalled updates and cache several times) but other apps like Messaging or even Settings can fail
- some apps just won't open over time. They'll work fine but then force close, and then any subsequent attempt to open it will force close it immediately
I still have a month on my warranty but would rather not send my phone in. Do you think that rooting my phone and installing a new ROM would fix these issues? If so which rooting method would you suggest and any suggestions on ROMs would be appreciated

AT&T D850 questions go here:
http://forum.xda-developers.com/att-lg-g3/help

G3 acting buggy, advice?

I'm using stock Android 5.0.1 on my G3 on AT&T (D850).
Recently my phone has been really buggy. I was randomly using the web browser and then my phone started freezing up, and then wouldn't load up apps. It restarted itself and when it did half my contacts had no names.
No browser was working so I factory reset the phone but then my problems continued:
-all web browsers will still randomly crash when browsing
- apps will get a "Unfortunately, X has stopped" error. Most common is Google Play Services (which I've uninstalled updates and cache several times) but other apps like Messaging or even Settings can fail
- some apps just won't open over time. They'll work fine but then force close, and then any subsequent attempt to open it will force close it immediately
I still have a month on my warranty but would rather not send my phone in. Do you think that rooting my phone and installing a new ROM would fix these issues? If so which rooting method would you suggest and any suggestions on ROMs would be appreciated

dragonx254 said:
I'm using stock Android 5.0.1 on my G3 on AT&T (D850).
Recently my phone has been really buggy. I was randomly using the web browser and then my phone started freezing up, and then wouldn't load up apps. It restarted itself and when it did half my contacts had no names.
No browser was working so I factory reset the phone but then my problems continued:
-all web browsers will still randomly crash when browsing
- apps will get a "Unfortunately, X has stopped" error. Most common is Google Play Services (which I've uninstalled updates and cache several times) but other apps like Messaging or even Settings can fail
- some apps just won't open over time. They'll work fine but then force close, and then any subsequent attempt to open it will force close it immediately
I still have a month on my warranty but would rather not send my phone in. Do you think that rooting my phone and installing a new ROM would fix these issues? If so which rooting method would you suggest and any suggestions on ROMs would be appreciated
Click to expand...
Click to collapse
Did you perform a factory reset? Try that first.
Sent from my iPhone using Tapatalk

I did two factory resets. Nothing changed

If you are on 21r, I think it is something with the update. My phone went crazy the first go even after factory reset. I reverted back to KK, installed all updates again, and haven't had much issue. Occasionally, something glitches but not a show stopper. I'm thinking the update to patch stagefright is buggy.
Sent from my LG-D850 using Tapatalk

(6045Y) Idol 3 - Google Play Services problem

Hello, it's my first post here so be lenient if you might.
My Idol 3 5.5 came back from repair (power button not working) and they replaced motherboard in order to fix it.
Everything seemed fine until I got home, connected to WiFi and tried to use Google Play. I downloaded all updates pending and tried to use WhatsApp. It said my time and date are wrong, I tried to change it few times, nothing helped. I uninstalled WhatsApp and Messenger (since it didn't work too) and tried to reinstall them. Suddenly notification about Google Play Services update popped out so as it said I did. After the update I've been greeted with whole bunch of similar notifications informing me that none of my apps will work and I have to update Google Play Services. That's a shame I already did... Tried cleaning cache and uninstalling updates etc. Nothing helped, still unable to use apps. After a while It has shown that it can't sync with my Google account, then informed me that I need to connect to the internet in order to use Google Play (I obviously was on my WiFi and internet connection was available, switched to mobile data and same occured). I performed factory reset, the phone didn't boot fo 10 minutes showing Alcatel animation so I turned it off. I opened service menu (power + vol up) and performed wipe from there, rebooted, phone started, configured it and same thing happened - no Google Play for me. I did it one more time, carefully logging in Google Account, not rushing anything in order not to screw up. Still nothing. At this moment I'm really frustrated since I can't use my phone and I'd really not want to send it to repair one more time since it lasts 2 weeks to get it back. Any ideas on how to fix it? Web browser worked fine, sms worked, phone calls were fine. Any ideas?
Idol 3 5.5
6045Y
Android 5.0.2
compilation LRX22G
Lucas

Maybe give Mobile Upgrade Q a try? It will flash the latest firmware available for your device and will probably fix any software-related problem

Factory reset and then turn on automatical time syncing. Wish you good luck.
Sent from my unknown using Tapatalk

factory reset...install google play services update and also google framwork updates..then reboot.
if this dont help go to the google play app and clear chache, then reboot.
if this also dont help go to recovery and wipe chache, thne reboot.

Extremely Slow Play Store Downloads

Hello,
Since about a couple of weeks ago, the Play Store started getting really slow. Updates get stuck at "download pending", and sometimes they do download. Other app downloads get stuck at 100% downloaded for a long time before installing. I can leave my phone on updating all night and in the morning it is still not done. This happens both on LTE and on Wi-Fi, and I do have very fast Wi-Fi. I am on the OxygenOS Open Beta 10. I did not do any changes to my phone when this started happening.
I have tried all of the following to fix the problem, but it doesn't help:
Rebooting the phone
Uninstalling Play Store updates
Deleting and adding Google Account
Clearing cache
I tried wiping the phone and using OxygenOS 9.0.2 - same problem.
I have clean-wiped the phone, deleting even internal storage, and flashed OxygenOS clean stock, and still it does this. (it also has new problems, like Magisk doesn't offer root authorization anymore even though it installed and working according to Magisk Manager...)
The only way I could get the Play Store to work properly was to use a custom ROM, HAVOC 2, but that ROM has problems with the front camera in some apps.
It almost seems like the Play Store detects OOS and decides to act funky. Has anyone faced this problem, or resolved it? Should I contact Google and see if the problem is their Play Store?
I almost feel like, since I have tried with clean wiping and using stock ROMs, and things that weren't broken before just started breaking for no reason, that there is a problem with the hardware itself. It makes no sense that the problems carry over into stock ROM when I have wiped everything several times.

Uninstall or disable the google app.
That fixed it for me.
Let me know if that works.