Well today my iphone acted strange and crashed. I was on the phone and then sent a text to a friend and then I hit the sleep button and then I wanted to use it and the the phone was non-responsive and would go to my second screen of apps. I tried to touch some buttons and then on my way home I just turned it off completely and restarted it and the phone works fine now How common are iphone crashes? I bought the phone on Jan. 2 and I am using the latest OS. What does a restore do? Is this normal every once in awhile. Should I exchange for a new iphone? I know the iphone is a computer and computers can crash. What does a restore do? What will I lose?