Has anyone used this service from AT&T? If so, what was your experience with it?
I've looked at getting a sim card while I am in Italy, but if I can use my regular phone, I'd rather do that. I want to be able to call and text back to the US, and not have to use an app to do it.
I will also be staying a few days in London, and I don't believe I can use a Tim card there...