ok mi iphone i turn the Edge on only no 3G and is not working but i turn the 3G and mi data IP address has changed when i turn on the 3G and i cant access to internet i need help please !!! the only way to 3G is work is i turn on the arplane mode and off and downgrade the signal automatic is change the Edge when is sync to to signal AT&T is autorized me the internet then wait to turn automatic 3G on and the Data IP address i stays the same code