http://www.telecomtiger.com/fullstory.aspx?passfrom=newsletter&storyid=2123&ptct=S86&passcategory=Enterprise
Telecom Tiger reports that T-Mobile claims to be having the world's most modern and advanced addition of its GSM/EDGE network. It improves voice quality and cost reductions.
T-Mobile's EDGE network is better to handle mobile / PDA gadgets iPhone, Notebooks and computers (having web & walk card, enabling fast internet on move) etc.
They are also enhancing the UMTS and W-LAN network technology.
Cheers : )