IPhone 4s hangs, and flashlight flashes when i get a message?

After I downloaded the IOS 6 my phone would hang, it would flash a light when I get new messages, or return to the main screen by itself when am using an app. I already restored it, but the same problens still happen. Is there a way that i can fix it? Or should I have it replace?

I downloaded the IOS 6 into my phone recently too and this kind of problem never happened to my device so I suggest you go to the Apple shop for help.

IOS6 has quite a few problems, exactly my reason for not upgrading.
I can help you out with the flashing for message problem, just follow these steps;

Settings>General>scroll down>Accessibility>scroll all the way down>LED Flash for Alerts; switch off.

Hope that helped!

Try redownloading the app if its causing problems

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