The Touch brand from the HTC stable has certainly evolved. From the Touch to the Dual and now the Touch Diamond, it feels like a planned strategy. All these phones were launched in a short span of time, while adopting significant design and feature-list changes.
The Touch Diamond fares far better than other phones in HTC's Touch series, so calling it a "successor" wouldn't be strictly accurate. Having reviewed the two previous Touch phones already, I will stick to those features that are unique to this one. For the rest, please check out our reviews of the HTC Touch and the Touch Dual.
Design
The interface is refreshingly new and chic. The phone is one of the thinnest in the Touch stable, and will hence appeal to the style-conscious. It’s important to keep in mind that the Diamond has an internal memory of 4GB, which really works to its advantage.
At 102 x 51 x 11.5 mm, this phone has shed a lot of bulk, and is easily the lightest Windows Mobile phone in the market at 110g. The front comprises the 2.8-inch touchscreen with the lower band housing the four function keys and the navigation button.
Though not raised, the buttons are not touch-sensitive. Having no clutter to bother with, the buttons work as they should, even if the nav-pad can be a bit off. Without nails, you might just end up hitting the Cancel or Call button.
The earphone jack, USB and the charging slot can be found at the bottom. The socket housing the stylus has accommodated a refreshing change with the inclusion of a mild magnetic effect, to ensure that your stylus doesn’t fall off. Turn the Touch and you will see a well designed back!!
No u r wrong, thd Indian version also has 3G but u cant use it coz network doesnt support this future. But now I m using SE-X1 called Xperia. Its a damm good phone also 3.5G. The GUI most likely Vista. U all must like it 
