Carrier
When youre in another country, you can choose which local carrier network to use for
your phone calls and EDGE Internet connections if more than one network is available.
You can only make calls on carriers that have roaming agreements with AT&T.
Additional fees may apply. Any international roaming charges will be billed by the
carrier of the selected network through AT&T.
For information about international coverage and how to enable roaming, go to:
http://www.wireless.att.com/learn/international
Select a carrier for phone calls
m Choose Carrier and select the network you want to use.
Once you select a network, iPhone will only use that network. If the network is
unavailable, No service will appear on the iPhone screen and you wont be able to
make or receive calls, or connect to the Internet via EDGE. Set Network Settings to
Automatic to have iPhone select a network for you.