Rahul
Galvanizer
Cutyoursim.com is again back with imei unlock for AT&T phone. its very expensive but worth it IMO, get it before its again goes out of stock.
http://cutyoursim.com/index.php/at-t-remote-iphone-unlock-service.html
http://cutyoursim.com/index.php/at-t-remote-iphone-unlock-service.html