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.
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.