The HTC Titan is an EVDO Rev. A Windows Mobile 6.1 Pocket PC phone manufactured by High Tech Computer Corporation of Taiwan. It is the successor to the HTC Apache upon which it improves by adding more ROM, GPS, EVDO Rev. A, additional hard keys, a scroll-wheel, spring-loaded keyboard, and a higher resolution camera. The Windows Mobile 6.1 operating system includes Office Mobile along with HTML email through Microsoft Outlook Mobile. Windows Media Player is included, allowing the Titan to act as a digital audio and digital movie player.