So I've ordered a 3Gs and it's my first iPhone. It's my first GSM based phone for that matter... I've been a VZW customer for over 10 years at this point. Not being on a CDMA phone brings the ability to move your SIM around as I understand it, which will be a nice change for me. Here's what I'd like to do. I want to pick up a cheap GoPhone like the Nokia 2610 for when I do things like ride my bike to work. I ride through the city and I've been knocked off my bike by being cut off in the past. The glass in my Motorola Razr Ve is cracked because of this, so the last thing I want is for it to happen to my new iPhone. I've searched around some and I've seen people say you can swap the SIM into other phones, but is there anything special about those AT&T GoPhones? Should it just work in one of those? What functionality will move with the SIM card? I assume I'll be able to make calls and send texts and have those calls and texts deduct properly from my plan, right? I don't need the data part to work even if the phone was capable of supporting that. My contacts won't transfer, right?