How to turn on your screen orientation from settings on an iPhone 4s?

I have ios8 and the bottom of my screen completely stopped working, so now i can't text or anything, and i also can't slide the box thing up to turn on the screen orientation. I can't find anything for it in settings, where is it?

Only way to flip the screen is to jailbreak your device which is only possible if you haven't update past IOS 8.1.2.

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