HTC HD2 T-Mobile edition

The battery life is about 12 hours. Windows Mobile is not super stable. tcpmp works well on WM2003, but crash on this phone. Good news is that it can be used in China and Japan beside United States. My phone also have Android system installed, and it can make phone call too (someone mentioned that the phone feature does not work on Android). When I switch between two systems, its date will be incorrect after change back to Windows Mobile system. It is easier to access internet via ActiveSync connection. WIFI feature is also great. I like the built-in GPS too.
Some small issues: the volume button is too big, sometimes it is touched unintentionally. It is difficult to lift battery cover. Finger is not as convenient as a pen. I miss the days of using a pen.