1. fabio984's Avatar
    I have a 5s, new, and have a good battery life with iOS9.
    I installed iOS10 beta and battery life sucks, so I installed iOS9 again.
    Then I waited a few weeks and installed iOS10 GM, and battery sucks again, so I went back to 9 again.
    Yesterday I installed iOS10 official with iTunes, and: battery life still sucks.

    I don't understand, it's just my phone with this problem? I really like the iOS10 and want keep with it, but, today I charged the phone twice...
    My settings are just like with iOS9, and with 10 I deleted 3 mailboxes and turned off weather widget.
    09-14-2016 04:32 PM
  2. Tartarus's Avatar
    Battery life is always worse in the first 2 days. After iOS 10 is fully settled and all background processes are finished, you will get the same battery life as in iOS 9.3.5.

    You're saying you put iOS 10 official release on your phone yesterday and decided to go back. That is way too little time to know battery life is worse.
    fabio984 and kch50428 like this.
    09-14-2016 04:35 PM
  3. fabio984's Avatar
    Battery life is always worse in the first 2 days. After iOS 10 is fully settled and all background processes are finished, you will get the same battery life as in iOS 9.3.5.

    You're saying you put iOS 10 official release on your phone yesterday and decided to go back. That is way too little time to know battery life is worse.
    Now you made me think if I install 9 or wait (I was clicking shift+restore)
    09-14-2016 04:38 PM
  4. Tartarus's Avatar
    Now you made me think if I install 9 or wait (I was clicking shift+restore)
    Give it some time. I have been using iOS 10 since the keynote in June on both an iPhone 5s and a 6 and have yet to see mentionable decrease in battery life.
    09-14-2016 04:40 PM
  5. dchandler's Avatar
    I'm not having good battery life with iOS10, the battery drains so fast.
    fabio984 likes this.
    09-14-2016 04:55 PM
  6. fabio984's Avatar
    I'm not having good battery life with iOS10, the battery drains so fast.
    It's iPhone 5s too?
    09-14-2016 05:03 PM
  7. gelz092's Avatar
    I'm not having good battery life with iOS10, the battery drains so fast.
    I'm thinking of going back to 9.3.5 too because of the battery life. It really does suck. I'll give it a week
    6s+ 64gb
    fabio984 likes this.
    09-14-2016 11:05 PM
  8. sir mictol's Avatar
    I'm thinking of going back to 9.3.5 too because of the battery life. It really does suck. I'll give it a week
    6s+ 64gb
    Erase everything on your device and restore; i have an iphone 5s and it runs perfectly and the battery life is better than my 9.3.5

    Posted via the iMore App
    09-15-2016 05:33 AM
  9. gelz092's Avatar
    I did. did not get better
    09-15-2016 05:51 AM
  10. Mustafaozcan33's Avatar
    You should have stayed ios 10 for 12 hours cuz when you first installed a firmware , the background apps get crazy but after 12 hours everything returns normal. I have 5S too and i don't have a problem with ios 10
    Tartarus and scruffypig like this.
    09-15-2016 07:18 AM
  11. fabio984's Avatar
    You should have stayed ios 10 for 12 hours cuz when you first installed a firmware , the background apps get crazy but after 12 hours everything returns normal. I have 5S too and i don't have a problem with ios 10
    And you had battery problems in the first day? I really like iOS 10, a lot, but I returned to 9.3.5...
    09-15-2016 10:12 AM
  12. Mustafaozcan33's Avatar
    And you had battery problems in the first day? I really like iOS 10, a lot, but I returned to 9.3.5...
    Yeah i had battery problems in the first day but 12 hours later problem is solved. I had battery problems on all ios versions but it solved somehow i dunno how it solved but having battery trouble is normal when you first installed a firmware
    09-15-2016 10:39 AM
  13. sir mictol's Avatar
    And you had battery problems in the first day? I really like iOS 10, a lot, but I returned to 9.3.5...
    Battery problem is going to vary depending upon the amount of data on your device, the new os simply tries to index your old data with itself resulting in battery drain, all you need to do is let the os run its course. It will stabilise (battery) when the indexing is complete

    Posted via the iMore App
    fabio984 likes this.
    09-15-2016 10:57 AM
  14. fabio984's Avatar
    Battery problem is going to vary depending upon the amount of data on your device, the new os simply tries to index your old data with itself resulting in battery drain, all you need to do is let the os run its course. It will stabilise (battery) when the indexing is complete
    If I knew this will really work I'll install iOS 10 immediately. In not telling it won't, but I installed it 4 times before. I'm tired of reinstall all my apps and emails and other configs...
    09-15-2016 02:22 PM
  15. Sherry_B's Avatar
    If I knew this will really work I'll install iOS 10 immediately. In not telling it won't, but I installed it 4 times before. I'm tired of reinstall all my apps and emails and other configs...

    sir mictol is correct. It's common for the battery to behave this way with a new large OS release. Generally it is best practice when the new release is large in enough in such a way that there's been a ton of new changes that you should do a fresh install (completely wipe the phone and set it up as new with the new update, and then manually re-install apps).

    Sometimes, but not always, when you overwrite a new update over the top of the previous you will get files that do not overwrite correctly, which can exacerbate the battery drain, cause some apps to crash, or cause some apps to behave in ways that they normally wouldn't.

    I recommend a fresh install and redo all of your stuff manually without reinstalling from backup. Give it a solid week to let things settle.
    fabio984 likes this.
    09-15-2016 02:40 PM
  16. ghostface147's Avatar
    For those stating that after a few days it should settle down because of background processes and such, put your money where your mouth and use some official citations proving your point. Not just commonly agreed upon conjecture.
    09-15-2016 11:54 PM

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