A highly customisable smartphone device. XDA is provided by O2. The first XDA model has been superseded by the improved XDA2 and XDA2i. Unlike Blackberry, XDAs are not directly tailored for one purpose, and can be adapted for a large variety of tasks. However, this can limit the amount of support retailers are able to provide.

first XT disk Keyword(s): device names

Extended Digital Assistant - This the term that O2 coined with their new Pocket PC 2002 Phone Edition which integrates a cell phone with a Pocket PC.