So I've realized that since I've been using Personal Hotspot to tether my iPhone to iPad that it's almost impossible to type on the iPhone 5. This was happening before iOS 7. The screen moves by itself and jumps from page to page without me even touching it. It maintains a connection when PH is enabled since I turn auto lock off. If I have to send a text it's really almost impossible to do so since the screen seems to act with a mind of its own. This started happening ever since I started tethering. Anyone out there have any advice?