For the past few days, since I updated my iPhone 4 for 4.3.1, it has been having many problems. My iPhone won' sync with my computer, my iPhone can't delete emails, it can't play quicktime videos, and half the apps either don't have icons or don't work or, and then most of the others crash a few minutes in. My iPhone is not jailbroken nor has it ever been jailbroken, and i have some important things videos and pictures and app data on it, and i really don't want to restore it and lose all of that. I'm wondering if anybody else has been having the same problem and if they found a solution. Thank You