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Support Severe Battery Drain

Discussion in 'Android Devices' started by Sgfox, May 2, 2016.

  1. Sgfox

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    Hello,
    Just last night I had charged my phone up 98%, unplugged it because I didn't want to go to bed with it plugged in, and went to bed. This morning, I woke up and it was at 3%! I go to grab my charger which is right near my bed and as soon as I plug it in, it dies. Once I turned it back on, I go to Battery part of the settings to find the culprit that is using all my battery. It says Android OS used 89% of my battery along with Android System with 5%, Phone Idle at 2%, and Cell Standby and WiFi both at 1%. All my apps were closed before I locked my screen and went to bed. There is no reason my phone should lose its nearly full charge overnight with no use at all. I've been reading that the S6 is in no comparison to the S5 or S7. I've had this phone for maybe a year now and the battery has never been as great as it was promised. What should I do?
     

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  2. Sgfox

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    Please help
     
  3. secretsquirrel

    secretsquirrel Well-Known Member
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    Join me in letting the world know the S6 is a sick joke, and that Samsung should be ashamed of themselves, if not boycotted?

    I've already decided my next phone will NOT be another Samsung
     
  4. Sgfox

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    No. How can I prevent this from using my battery?
     
  5. Sgfox

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  6. Sgfox

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  7. Snakeyeskm

    Snakeyeskm Android Expert
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    For a start, try clearing the system cache. Keep in mind that the android system interacts with all the different packages installed by apps. Very possibly, one of your apps is causing this sudden problem.
    Once you have cleared your system cache (post if you want precise instructions) start looking at your recently installed or updated apps. If you cannot identify the precise app I would then, temporarily, remove batches of apps (half of them, and then half of the remaining etc. etc.) till this battery drain stops.
    Best of luck. Over 90% of the time it's not the phone but rather, installed software.
     
  8. Sgfox

    Sgfox Lurker
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    Do you mean the cached data? Probably not. I'm not sure what the system cache is, so could you give me instructions? Thank you so much for replying.
     
  9. Snakeyeskm

    Snakeyeskm Android Expert
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    Here you go.
    How to wipe the system cache on the Galaxy S6
    If it's your Android system that is acting weird and not just an app or two, you might want to clear the system cache, also known as wiping the cache partition. The most common time this is useful is straight after an Android update, when battery drain, glitches, crashes or other weirdness can occasionally affect your system.

    1. Turn off your Galaxy S6.

    2. Press and hold Power, Volume Up and the Home button.

    [​IMG]
    Press and hold Power, Volume Up and Home. / © ANDROIDPIT
    3. You'll see a blue screen with the Android on it, then you'll be taken to the recovery menu.

    4. Use the volume buttons to scroll and highlight Wipe Cache Partition. Press Power to confirm.

    [​IMG]
    Select Wipe Cache Partition. / © ANDROIDPIT
    5. You'll see a message in yellow at the bottom of the screen when the process is complete.

    [​IMG]
    You'll get a ''wipe complete'' message once it's done. / © ANDROIDPIT
    6. Highlight Reboot System Now and press Power to confirm.

    [​IMG]
    Time to rebooot your Galaxy S6. / © ANDROIDPIT
    7. Your Galaxy S6 will reboot and recompile all of your apps. It might take a little while to re-cache them all, but once it is done you should have a Galaxy S6 running as smooth as can be.
     
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  10. Sgfox

    Sgfox Lurker
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    Will this erase anything like pictures and what not. Like what exactly does it do
     
  11. Snakeyeskm

    Snakeyeskm Android Expert
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    You won't be able to tell the difference. All your information and data will remain unchanged. In a very simple way (I have a very simple mind) it flushes the temp files from your OS eliminating any potential corruptions in these temp files.
     
  12. Sgfox

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    Thank you
     
  13. Sgfox

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    It really didn't do much. Battery is still awful
     
  14. Snakeyeskm

    Snakeyeskm Android Expert
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    Clearing the system cache is really the first step to ensure that corrupted cached data is not causing your issue.

    This problem has been reported on Galaxy S6's fairly frequently and solutions have been all over the place. To start with, charge the phone and then using the pulldown menu disable Sync. See if that helps.

    Heavy usage by Android System is generally easier to debug since it is responsible for running all packages for the apps you install. Android OS on the other hand primary runs processes that are executed on behalf of apps and system. One alternative, a PITA to be sure, is to successively uninstall batches of apps, specially recent ones to try and identify any offending apps.

    Sorry I really can't think of a simpler solution

    Obviously if all else fails, a full reset might be the only solution.
     
  15. ShemATC

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    My S6 just started doing this the last few days. No new apps installed, and no updates that I know of.

    Is there any way to find a list of what apps might have been auto-updated over wifi? It has to be something recently changed that all of a sudden has caused this change. I've had this phone for months with no battery usage issues, and even after the marshmallow update battery usage seemed fine.
     
  16. secretsquirrel

    secretsquirrel Well-Known Member
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    It's just the built-in non-replaceable battery giving up. The S7 is out now, did you expect the battery to last longer?
     
  17. Radar99

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  18. Jim Tburgrzz

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    Try downloading an app like Purify or Greenify from Google Play. Helps keep those vampire apps in check when not in use.
     
  19. semobill

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    Thank you so much, Snakeyes. I thought it might be a bit too complicated for this old man but it was actually quite easy. Saw immediate results and it is still working days later. Appreciated the help.
    Bill
     
  20. Snakeyeskm

    Snakeyeskm Android Expert
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    You're welcome. I'm glad it worked for you.
     

Samsung Galaxy S6

The Samsung Galaxy S6 launched in 2015 as the company's flagship. It features a 5.1-inch screen with 2560 x 1440 resolution, 3GB of RAM, 32GB of storage, and an impressive 16 megapixel camera.

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