FCC approved a new Sony Ericsson model, unknown until this moment. It is the TM506
, and seems to be headed to T-Mobile USA, with a logo of the carrier and support for its 3G band. It is similar to the Z780
both in design and functionality and also like it features aGPS, M2 memory card slot and Bluetooth. We guess that the phone will have a QVGA internal display and a smaller monochrome external one.
The TM506 isn’t typical for the manufacturer’s modeling scheme, so we may see it renamed when it gets officially announced.