My iPhone 5 iMessage is not working for ios 7?

I've gone into messages & clicked iMessage "on" but it keeps toggling back & forth automatically & will not allow me to drag it completely to the other side. I'll drag the green dot to the side and take my finger off and it just swipes it back! If anyone can help it would be great thank you. If you're telling me that I need to reset my network settings please tell me exactly what that does in detail. I've already restarted my iPhone a few times by holding down the home & lock button.

I had the exact problem this morning…
I reset all my settings.
But I assume you could also restore your phone via iTunes.
Hope this helped…

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