O2 launched its original Xda in 2002. At the time it was one of the few Windows Mobile devices with an integrated mobile phone. Times have changed and now it is unusual to see a Windows Mobile device without SIM support. In the intervening period O2 has successfully maintained and developed its Xda series, and the Xda Orbit 2 updates the original Xda Orbit. Its key features include a GPS receiver and navigation software.