The HTC Desire Z is an all-rounder kind of mobile phone. While its physical QWERTY keyboard makes it easy for you to do all your texting and socialising, the 3.7-inch WVGA touchscreen lets it stay abreast with current trends. Thus, it brings the best of both worlds.
Like most present day smartphones, this Android 2.2 device lets you access the web on the go. There are both 3G as well as WiFi connectivity on-board. Being a playground for the HTC Sense UI, this phone offers various helpful features like aggregated social network updates (Friend Stream); quick search features in Google, Wikipedia and YouTube; gesture recognition for hushing the phone when it rings when in a meeting room; intelligent ringing to get your attention if it is in the bag; birthday and Facebook status when a caller calls in; reflow of text when zoomed in for convenient reading without scrolling left and right; quick loading maps with many location based guidance features and more. The HTCSense.com cloud based service can help you with finding your lost or misplaced handset as well and even wiping out data remotely.
The specs on board include – an 800MHz processor, a 5MP camera with autofocus, flash, 720p recording, a micro-USB port, a 3.5mm headphone jack, a multimedia player, sensors (G-Sensor, Digital compass, Proximity sensor, Ambient light sensor), Bluetooth 2.1, GPS, USB and WiFi tethering, talktime of about 7-9 hours.
This HTC Desire Z phone is expected to be released in the coming months.
The HTC Desire HD Phone, like its name suggests is an HD entertainment handset. It has a large 4.3-inch touchscreen. Plus there is Dolby Mobile along with SRS virtual surround sound to bring a rich multimedia experience whenever or wherever. There’s plenty more to talk about this 
Although, HTC Touch Diamond2 Mobile Phone is an enhanced version of the Touch Diamond Mobile Phone, it does not resemble its predecessor completely. Firstly, it comes with a large 3.2-inch touch screen display that includes a resolution of 480 x 800 pixels; as compared to its predecessor’s 2.8-inch 480 x 640 pixels display. Just below the touch screen, a touch sensitive zoom control is situated, which allows you to zoom in and out of the web pages. This smart phone is 107.85 mm long, 53.1mm wide and 13.7 mm thick. It weighs around 117.5 grams.