iPhone 5 battery problems
Hey everyone, I've bought an used iPhone 5 and everything was fine, until the battery started acting weird. I charged it to 100% and then left the phone in my room, everything turned off, brightness, airdrop etc. However, the battery dropped to 70%! Also when I turn off the phone and then turn it on later the battery life indicator jumps around. The phone also turned itself off yesterday even tho I didn't turn it off and there was some battery life left. I've been using it this night and it dropped to 1%, but it lasted about a hour. The battery goes down rapidly, I don't even use it the whole day and it drains down quickly. What should I do please?
Hey everyone, I've bought an used iPhone 5 and everything was fine, until the battery started acting weird. I charged it to 100% and then left the phone in my room, everything turned off, brightness, airdrop etc. However, the battery dropped to 70%! Also when I turn off the phone and then turn it on later the battery life indicator jumps around. The phone also turned itself off yesterday even tho I didn't turn it off and there was some battery life left. I've been using it this night and it dropped to 1%, but it lasted about a hour. The battery goes down rapidly, I don't even use it the whole day and it drains down quickly. What should I do please?