HTC T8585 HD2 unlocked phone is the sequel model of the HTC Touch HD smartphone. The HD2 has furthermore expanded its screen size to 4.3 inches from the first generation Touch HD 3.8 inches display. With only 11mm thickness, the unlocked smartphone HD2 has adopted TFT captivate WVGA high resolution 65K touchscreen. It also support multi-touch input method, its multi-touch function is called Pan Zoom according to HTC. Unfortunately, due to restrictions from Microsoft Windows Mobile, Pan Zoom only works for few applications; such as pictures and net browsing, and Mobile Office.

The attractiveness of HD2 is not only its huge 4.3 inches screen. It is also the newly modified HTC Sense user interface and the most recent update operating system, Microsoft Windows Mobile 6.5. The popularity of the HTC Hero UI has created such huge noise that the HTC Sense is now transplanted to HD2. Since Touch Diamond, HTC has hooked up with TouchFLO 3D UI on Windows Mobile system, and it has been highly graded by the public. On HTC HD2, TouchFLO 3D has been taken over (or unified) as HTC Sense. On the contact list page, Sense UI reminds user of who was recently called, SMS, e-mail. HD2 also supports importing FaceBook account of those who are in the phone's contact list. FaceBook status or newsfeed updates of friends, therefore, can be seen on the phone as well. This makes HD2 the first Windows Mobile smartphone to put HTC Sense into use. 'Stay Close', 'Make It Mine', 'Discover the Unexpected' are the three objectives that HTC Sense strongly presented. These objectives can apply to the HD2 effectively.

HTC HD2 uses Qualcomm Snapdragon QSD8250 1GHz processor, it guarantees users of providing the best efficacy while running applications. Moreover, HD2 also has a 512MB ROM and 488MB RAM. The capacity of RAM has increased massively, it can now perform mulit-tasking smoothly. HD2 did not improve the camera megapixels from Touch HD. Still composed with a 5.0MP camera, however, it has added a duel LED flash. The duel LED flash will assist the camera to take a stunning picture under low light setting. The camera supports up to ISO 800 and video recording can be recorded in VGA resolution up to 30FPS.

HD2 is definitely one of the best Window Mobile smartphone in the market at the time of its release. Other specifications include WiFi support, bluetooth 2.1, A-GPS.