If you go with ATT do not go with the Go Phone plan...they cannot speak english. Stick with a post pay plan. The cost of your plan will range from $20 to $30 per month for unlimited pics. Take you camera down to your carrier's storefront and have them set it up for you. Make sure it is receiving before you leave the store. They will give you a sim card for nothing.
Amen brother. I was at the ATT store last night for 2 hours while they undid what the Go Phone people did.
What still pisses me off is even with the correct plan, the only way they can give you the passcode to manage the account on-line is to send it via text. The f'in camera can't receive a text, I said that 100 times and they insist there is no other way.