IPHONE 4S PROBLEM! Read description?

So earlier this morning my screen orientation was perfectly fine. And NO it is not locked. But now it does not tilt while playing games, doesn't rotate while using safari or looking at pics or texting. There's no screen protector on it so therefore nothing covering the sensor. The case is just this little plastic case covering the back and sides of the phone with nothing on the screen. What's wrong with it? Should i go visit an Apple Genius Bar?!

Jailbreak it

Hmm, did you try to turn the phone off?

1. Restore it with itunes.

2. There are a lot of forums sites on how to fix iphone issues.

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