As any person who uses an unlocked iPhone on T-Mobile USA would know, unlocked iPhone running on T-Mobile USA are limited to 2G (Edge) speed — which is terribly slow compared with 3G speeds. Well, good news if you hate those shitty   2G speeds from T-Mobile on your unlocked iPhone. Members of Howardforums are now reporting that their iPhone 4S have picked up T-Mobile’s 3G signal. One of the forum member took the screenshot showing the 3G speed he received using the SpeedTest app while he was located at Penndel, Pennsylvania.

Source: Howardforums