1. Android Central Question's Avatar
    I bought my Galaxy A8 about a month ago. First, everything was perfect, the battery life was great. But, after I update the new software (two weeks ago) my battery started to drain very fast! Most of my battery usage is Screen, Android OS, Device idle, Android system. I have everything turned off (Location, Wi-fi, auto brightness etc)
    I think that the update is the problem.

    Example, my battery for 8h at night drain 17%.

    Any solutions?
    11-16-2018 12:02 PM
  2. Rukbat's Avatar
    Try going into recovery (Volume +/Home/Power) and do a cache clear. (Do not clear storage or do a factory reset, just clear the cache.) See if that helps.
    11-16-2018 03:30 PM
  3. Fernandoagstn's Avatar
    Is that working, many battery life problems on A8 2018
    12-06-2018 02:15 AM
  4. B. Diddy's Avatar
    Is that working, many battery life problems on A8 2018
    Are you the OP? Did you try the cache partition wipe, as suggested by Rukbat? https://www.hardreset.info/devices/s...recovery-mode/
    12-06-2018 02:17 AM
  5. Alex B6's Avatar
    I bought my Galaxy A8 about a month ago. First, everything was perfect, the battery life was great. But, after I update the new software (two weeks ago) my battery started to drain very fast! Most of my battery usage is Screen, Android OS, Device idle, Android system. I have everything turned off (Location, Wi-fi, auto brightness etc)
    I think that the update is the problem.

    Example, my battery for 8h at night drain 17%.

    Any solutions?
    Roll back to Android 8, I had the same issue updating to 9, my a8 is 8 months old. When surfing the net or playing games, it gets very hot and battery life is like 6 hrs.
    Rolled back to 8 and it's a new phone.
    The trouble with new ui updates is that it gets written on top of the previous ui. This is what causes the bugs. If you bought a brand new a8 with Android 9 installed from factory, it will be bug free. If you can completely wipe the Android 8 from the phone and then install 9, it should in theory be bug free. I have discussed this with Samsung support and they said this is not possible as you still need files from 8 to make 9 work when updating.
    06-26-2019 09:08 AM

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