Looks like T-Mobile is finally getting a Sony Ericsson 3G phones. On the FCC website, the T-Mobile TM506 is what they are going to brand the Sony Ericsson Z780. It will feature 3G on 1700/2100 AWS spectrum and Quadband GSM/EDGE. This is the same phone that is probably going to be released on AT&T as well except a different color shell and 3G bands. Note that this is also the first SE phone on T-Mobile since the T610 appeared in 2003 and was discontinued at the end of 2004.