Can't transfer phone number!!!

Same problem. After 2 hours of being on hold and some extremely helpful CSR's we came up with this work around.
1) Sign up with new customer need new number
2) Go through entire activation write down your new number
3) Call AT&T Porting department at 888-898-7685 (I think however they closed at 12:00am EST)
4) Tell them you need to port your Sprint Number to the new number you just received and make that number go away.
5) The iPhone Rocks. Enjoy!
Took me a total of 5 minutes once I found out what to do. I am done and ported. (THANK GOD!)

Thank you for this!! I had the same issue with my TMobile. The porting department is closed now, but I still feel hesitant about just signing up and porting later. It seems strange still.

I wanna play with my iPhone!

AT&T will say you cannot transfer your phone number if your old phone number is in a different service area than your current location/billing address. HOWEVER, there is a workaround.

On the first screen of the activation step, you'll need to enter your old billing zip (i.e. a zip code that matches the area code of your current phone number). Later in the process you'll be able to enter your correct billing address.

See this link for a full explanation..
http://tinyurl.com/2aja4t

THANK YOU SO MUCH.

I'm sitting on hold with ATT&T while I read this and tried a local zip code and it went through!