Why can't i sign into game center?

I have a iphone 4 and everytime i try to get on a game i tells me to sign in and wen i put the information in and press sign in and i literally takes all freaking day to sign in and it still doesn't sign in i try to press close or create new accoun tand they don't work and also my email and safari not workingPLZ Help!

Did you try restarting your phone completely? This may help. Try it out and let me know what happens.

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