My screen brightness affects my battery
Hey apple fab fans :D
Recently I've noticed that I my battery has been dying quickly because of my screen brightness,
I mean to say that when my brightness is up high, my phone overheats and dies in under 3 hours!
I've also had it on iOS 7 and that drains my battery even quicker :(
Is this normal for an iPhone or should I get it looked at?
It's a 4S on iOS 6.1.3
iPhone 4S, iOS 6.1.3