The first details on T-Mobile's Shadow II mobile phone are now available, thanks to public documents filed with the FCC. The HTC-designed Windows Mobile 6.1 smartphone maintains the same slider design as the original Shadow, revealing a reduced-button 20-key QWERTY keypad. The new Shadow adds Unlicensed Mobile Access support, letting you save minutes by transitioning from the GSM phone network to WiFi connections as they become available. The GSM reception is quad-band for global compatibility, and the phone can use EDGE data when there's no WiFi signal present. The rest of the specs show little change from the existing model, save for a CPU speed bump; the phone's camera is still at two megapixels and the display is still a 2.6-inch QVGA screen. Thanks to Windows Mobile, the Shadow II should support plenty of audio and video formats, loadable onto microSD cards. Lacking any official statement from T-Mobile, no information's available on price or release date.