- When the stylus is removed in a call, it starts a note for that person. Removing the stylus turns on the device. There is a magnetic latch for stylus, no more losing the stylus by it falling out!
- When the phone is ringing, you can turn it over to mute the call
- There is a marble game with an accelerometer included, also tied to vibration motor
- It was designed for haptic feedback, but the user experience wasn't satisfactory
- The screen is NOT capacitive due to acceptable user experience for handwriting recognition essential in asian markets
- There is tempered glass on the front of the Touch Diamond, a first for a HTC device. Touch surface -> tempered glass -> LCD
- It doesn't auto rotate all apps, just Album, Browser etc.
- The GPU (graphics accelerator) IS in use
- There is NO microSD slot, adding it would have added 2mm to the chassis
- There is a built in mass storage mode. When you use it to add content from your PC, the music and photo apps automagically update
- The Browser uses the Opera rendering engine, but completely HTC engineered UI