That’s right, kids, T-Mobile launched 3G data in Vegas this morning. The 1700MHz AWS 3G network went live for phones that can hit the UMTS 3G data stream, and if your phone is one of those, you may want to look for the pretty little icon and start doing some Intertron browsing. T-Mobile still expects to hit another 20 markets this year (along with some new handsets), so if you’re not in Sin City, be patient — 3G is coming.