Motorola

I don't know if this belongs here or the Cingular forum.

I have a Razr that is activated for int'l roaming. However, I cannot get it to work (connect to the local network). I was in Colombia, Venezuela and now Brazil, and the phone doesn't work. At one point I got it to see a network, but after the "registering" message nothing happens.

Cingular has been no help and I don't know how to troubleshoot.

Any advise?

Thanks.