The Pure was released with Windows Mobile 6.5, and featured a redesign of the phone, with a more uniform glossy black surface, and a rounded bottom.

[6] The XDAndroid project makes it possible to run Android on HTC Windows Mobile phones, including the Touch Diamond2.

This device, although thicker than its predecessor (13.7 millimetres (0.54 in) thick), now features a significantly larger screen with a better resolution (WVGA rather than VGA).

The device also includes expandable memory, meaning users are able to insert their own microSD cards, rather than relying on internal storage only, as with the original Diamond.

HTC has again included an accelerometer for screen rotation detection and a light sensor for automatic backlight adjustment.