Apple ipod

So my personal work iphones 3G?

I have the 32GB iPhone 3G recently, it worked fine, but suddenly my 3G wrork usual, when I turn on says, "no service, then turn it off and runs on the board. How I can solve this problem, or what?

No I have idea of trying to take it to AT & T and can be remedied, probably

IPhone No Service Fix After Downgrade From 2.0.0 to 1.1.4 Fix Please Donate