how do you put your iphone 4 in sleep mode?
my battery is going dead fast and I cant figure out how to put my iphone 4 in sleep mode. I cannot push the top button cause it quit working.
iPhone 4, iOS 7.1
Go to Settings > General > Auto-Lock. Set it for 1 minute. Then, after not using your iPhone for 1 minute, the screen will lock and go dark.