Another Korean smartie in the form of SPH-M4650 also allows screen touching as it runs Windows Mobile 6 Pro.  However, this one is one better with vibration touch or haptic feedback.  Needless to say, it connects very fast with 3G.  The screen is also 2.8 inches, QVGA, quite respectable even for viewing DMB mobile TV programs.  It entertains with all the usual multimedia, takes pictures in 2 MP, and has enough memory at 256MB. All these features are squashed neatly into a very slim 14mm thickness.  There is no slider for any QWERTY or other keyboard, just touch keys on the screen.