Then I'll go with black from Rogers and get cyan spray paint ! I've lived with phones that are not fully functional. Rogers Samsung Focus on Fido for example. The SMS never worked right. Nice phone but SMS is a big part of communication, so it became an issue. Sold the phone and dumped Fido. All that said I'm using a Rogers Nokia Lumia 710 on Mobilicity right now. No issues at all.
If AT&T is locking the unit down on this feature... then it's a black unit from Rogers for me. Have to wait and see.
Your Milage May Vary. I'm not responsibile for any damage. Posted for educational use only.