I set a passcode on my iPhone 4S a few hours ago, and it was working and unlocking perfectly fine. Fast forward a few hours, and my phone keeps saying the pass. is incorrect. It got disabled for 15 minutes, and now it says "try again in 3 minutes". I tried connecting it to iTunes and the AutoPlay window pops up along with iTunes, and my phone shows up, but when I click Back Up Now, it says it cannot back up b/c "it is locked with a passcode". It shows all the apps and songs on it, but I can't unlock it! This is so frustrating. What can I do? Oh, and I promise you that this is my phone, I didn't steal it. Help 