T Mobile introduced latest design mobile phone T Mobile Wing. First, the good stuff. The Wing comes packed with an impressive arsenal of smartphone features, including Exchange ActiveSync and Direct Push support for corporate servers, Bluetooth, the mobile versions of Windows Media Player and Internet Explorer, a microSD memory expansion slot (conveniently located on the left spine of the phone), a two megapixel camera, and a quad-band GSM radio for placing calls on worldwide networks. There's no built-in GPS navigation or 3G (T-Mobile has yet to roll out its own 3G network), but you can get high-speed data over the built-in Wi-Fi receiver nice for anyone with a wireless home or office network.