I have had my Iphone 4s for maybe a year or less, but it has had a previous owner, my sister. It can have 80% or higher and it will shut down, then when I try to power it back on it has the plug in charger symbol as if it has no battery. However, if I wait, I can power it back on but it will shut down again soon after depending on the moment. Does it require a new battery or just a restore?
Added (1). -new info-
I've done a hard reset and and restore and it still is shutting off on me unless its on a charger. What's even worse now is that the charger isn't working properly.So, basically, I have lost all use of my phone even though it had a high charge last I checked. It's not too important but it does help me ride the bus to school, and my ride is around an hour. I'll just have to read on the bus without my music. *sadface*