When it comes to smartphones and wireless data services, 4G is definitely one of the hottest features today. And while various wireless service providers are touting their 4G networks and upcoming plans for 4G, there are still a relatively small number of smartphones that actually support 4G technology and can take full advantage of the speed boost and other advantages 4G provides.
The latest 4G device from T-Mobile is the Samsung Galaxy S 4G. This phone works on T-Mobile's HSPA+ 4G network, which uses a different technical standard than Sprint or Verizon Wireless' 4G networks. According to T-Mobile, the Samsung Galaxy S 4G is the wireless carrier's first smartphone that is capable of delivering theoretical peak download speeds of up to 21 Mbps while in one of T-Mobile's 4G coverage areas...
Samsung Galaxy S 4G Android Smartphone Review

Marco Chiappetta
Marco's interest in computing and technology dates all the way back to his early childhood. Even before being exposed to the Commodore P.E.T. and later the Commodore 64 in the early ‘80s, he was interested in electricity and electronics, and he still has the modded AFX cars and shop-worn soldering irons to prove it. Once he got his hands on his own Commodore 64, however, computing became Marco's passion. Throughout his academic and professional lives, Marco has worked with virtually every major platform from the TRS-80 and Amiga, to today's high end, multi-core servers. Over the years, he has worked in many fields related to technology and computing, including system design, assembly and sales, professional quality assurance testing, and technical writing. In addition to being the Managing Editor here at HotHardware for close to 15 years, Marco is also a freelance writer whose work has been published in a number of PC and technology related print publications and he is a regular fixture on HotHardware’s own Two and a Half Geeks webcast. - Contact: marco(at)hothardware(dot)com