Also interesting.  I hope Sony doesn’t make it require their usual proprietary overly expensive memory cards

 

Yup, this phone supports WCDMA/UMTS 1700/2100. For the non tech geeks, that means T-Mobile 3G. It also does UMTS 850/1900 which is AT&T 3G.

Some might be worried because the first Xperia X1 also featured T-Mobile 3G bands, but it was never actually released by the carrier. Don’t fret, because one of our ninjas told us that Sony Ericsson is planning a big event soon in New York. Why would Sony Ericsson make an appearance in the United States to tout their new Android phone, unless they already have a carrier deal(s) worked out. This is more than a coincidence.

Sony Ericsson Xperia X10 headed to T-Mobile and AT&T? – Android and Me