I'm pretty clueless about how GSM phones work. I understand that, being in Chicago, I could sign up with AT&T for their new service. My concern is that coverage is pretty limited. Some questions:

1. With the T68, I wouldn't be able to use the phone on AT&T's non-GSM network which has much broader coverage. Is that right?

2. If I manage to get an unlocked T68, are there other networks in the U.S. that I could use without signing up for some other plan? Could I just get some prepaid or similar plan from someone else?

3. My understanding is that in Europe, I could fairly easily do what I'm describing in (2). Is that right?

Thanks for any answers. I looked through the T68 site but still wasn't clear on these issues. (And a bit afraid to post there.)