iPhone 5 screen will magnify (on it's own)
For no apparent reason the phone will suddenly magnify the icons or get so big that you can't even get to the slide switch to shut phone off. Most times just waiting a period of time (30 minutes plus) will help and it will suddenly go back to the normal screen. Sometimes it just stops working completely so you can't even make a phone call on it as the screen is unresponsive. Any ideas?
iPhone 5, iOS 6.1.4