I bought a used iPhone 3GS and the owner claims it worked fine with iOS 4.3.5. When I came home, I reset all content and settings on iPhone. Did I know that doing the reset would force me to upgrade ...
I just upgraded from a 3GS to a 4s and my battery life is dramatically worse. I wasn't expecting it to be the same (though I was hoping that it might even be better), but I'm seeing a big difference. ...
So my iPhone is charged at 100% overnight, and when the battery gets to like 90%, the phone suddenly shuts off when I open an app like Facebook, Foursquare, Maps, etc... I try turning it back on and ...