Why does my iPhone 4s keep turning off after a replaced battery?
I have had my Iphone 4S for about 20 months and last week it started turning off on it's own on and off. At first when the problem started, it would work no matter what when plugged in but then that wouldn't even work. When that started to happen I bought a new battery and replaced it but the problem never changed. The phone will turn on but when it turns on the apple logo is on the screen for about a minute then practically immediately after turning on and going to my lock screen it shuts back off on its own. The phone is out of warranty so it can't be replaced by Apple. Please help!!!!