T-Mobile has finally stumbled into the world of high-speed data transfer today: The company is rolling out a 3G network in New York City. The last of the major American networks to make the leap, T-Mobile's network bump is focused more on improving call quality than on resource-heavy activities such as Web browsing. The new network uses UMTS and HSDPA systems.

According to T-Mobile, 3G coverage will be rolled out across the country throughout 2008. "By year's end, T-Mobile expects its high-speed data network will be available in those cities where a majority of its subscribers currently use data services," said the company in a release issued today.

At present, the carrier offers four 3G phones: the Nokia 6263, Nokia 3555, Samsung T639, and Samsung T819. But, as Sascha Segan points out at PCMag.com, none of the four have true Web browsers and all rely on UTMS, rather than the higher speed HSDPA.

More from T-Mobile's release: "In the coming months, T-Mobile plans to offer its first HSDPA device, along with new and compelling data-centric, all-in-one devices that help make the most of T-Mobile's high-speed data network."