iphone shows up on itunes but cant do anything on it.

[twinzluvagrL]

it used to be able to sync by itself and whatever i have on itunes music will just sync to my iphone, but now it just wont sync no matter what i do and i dont know what to do can anyone please help me? i tried googling it but nothings really working. i have a 3G iphone

 

[ddesign]

have you tried to restore your iphone?

 

[wackymacky]

Have you changed the iTunes/apple ID account associate with iTunes on the computer (of the phone?)

You say nothing happens? It shows up as a device in iTunes so what happens when you click on it? Expected result?

If so, do you get an error message when you click the sync tab?