HTC Touch Diamond, also known as the HTC P3700 or by its secret name the HTC Diamond, is a Windows Mobile 6.1-powered Pocket PC designed and manufactured by HTC. It is the first device to feature TouchFLO 3D - a new version of the TouchFLO  interface, unique to the Touch family. The HTC Touch Diamond was first available in Hong Kong in late May 2008.  It was available across all major European carriers in June 2008, and will be available later in the year in other parts of the world. The American Touch Diamond was launched on September 14 2008 on the Sprint network, and April 10, 2009 on the Verizon Wireless  network. The European release date was slightly delayed by a last-minute ROM update.  The carrier bound names for this phone include T-Mobile MDA Compact IV, O2 XDA Diamond  and O2 XDA Ignito.  It is the official successor of the HTC Touch.  The successor to the Touch Diamond - the HTC Touch Diamond2 - was announced in February 2009 for Q2 2009 release outside the US and Q4 release estimated for North America.

HTC opted for resistive technology for the touchscreen. The reason cited by Horace Luke, HTC's Chief Innovation Officer, was that the resistive touch screen is better for Asian character recognition.  However, the buttons beneath the screen, as well as being pressable buttons, have capacitive touch sensitivity. This feature is used by the camera application to auto-focus the camera as a finger approaches to press the button that will take a picture.


Some people find that the Touch Diamond's battery life is too short. Consequently, batteries offering double the capacity of the included battery are being sold by third parties and HTC itself sells an extended battery with 50% extra capacity.

The screen turns itself off when a person is on a call. This is to prevent the screen accepting unwanted inputs from the user's face when they are making a call, but it also requires the user to turn the screen back on if they want to use the screen. Removing the stylus when in a phone call both turns on the screen and starts up the notes application

TouchFLO is a user-interface designed by HTC. It is used by dragging your finger up the screen and moving your finger left and right to access common tasks. TouchFLO was used in the HTC Touch Family of Pocket PCs and was succeeded by TouchFLO 3D. TouchFLO can be found on these phones:

    * HTC Touch
    * HTC Touch Dual
    * HTC Touch Cruise

The HTC Touch Viva and HTC Touch 3G have a version of TouchFLO 3D that lacks the 3D visual effects found on other devices with TouchFLO 3D. HTC is also calling this significantly different user interface TouchFLO

HTC Touch, also known as the HTC P3450 or its codename the HTC Elf, is a Windows Mobile 6-powered Pocket PC designed and manufactured by HTC. Its main, unique feature is a user interface named TouchFLO    that detects a sweeping motion and can distinguish between a finger and a stylus. TouchFLO incorporates stylus-free access to a music player, a photo album, a video player and a picture-based contact book. The global launch of the Touch was in Leicester Square, London, on June 5, 2007, and the phone was initially available in two colours: black and green.  The carrier bound names for this phone include Verizon Wireless XV6900, T-Mobile MDA Touch, O2 XDA Nova, Okta Touch  and Vodafone VPA Touch.

In November 2007, HTC started to sell an "Enhanced" Touch, also known as the HTC P3452 or its codename the HTC Elfin, with double the RAM and ROM of the original version 128MB and 256MB respectively. The newer version is also available in two new colors white and burgundy



    * TouchFLO

 Memory

    * 128 MB (35.46MB user-accessible) Flash ROM
    * 64 MB (47.89MB accessible) SDRAM
    * microSD expansion slot  features
    * TI OMAP 850 201 MHz processor
    * 2.0 Megapixel CMOS color camera
    * 2.8 in. LCD screen (240x320 px, 65k-color, QVGA, TFT)
    * Tri band GSM / GPRS (Class 10) / EDGE: GSM 900, GSM 1800, GSM 1900 (2.75G)
    * 802.11b/g Wi-Fi
    * Bluetooth 2.0
    * HTC ExtUSB (11-pin mini-USB & audio jack
    * Touchscreen
    * 5 -way directional block
    * Power and camera buttons
HTC Vogue

The CDMA version of the Touch, known as the HTC Vogue or the  HTC P3050, has double the RAM and ROM of the original Touch, a faster 400 MHz processor , and a faster over the air data capability, but no Wi-Fi. This is sold under the name Okta Touch by Telecom in New Zealand. Also sold as the "HTC Touch" through Sprint Nextel[3] and Alltel and as the "XV6900" through Verizon Wireless in the United States; as the "HTC Touch" by Bell Mobility  and Telus Mobility[7] in Canada; and through Raya and i2 Mobile in Egypt. The Google Android OS has been successfully ported to HTC Vogue

 Models List

    * HTC Touch, the first member of the family, featuring EDGE , a 2.0 megapixel camera and the first version of TouchFLO.
    * HTC Touch Dual, very similar to the original Touch, with the addition of a dial keypad and HSDPA (3.5G), but removing support for wi-fi and 2.6in screen vs 2.8in on the Touch.
    * HTC Touch Cruise , an improved handset supporting 3.5G and having GPS capabilities.
    * HTC Touch Diamond, a significant re-design featuring HSDPA, 4GB internal storage, a 3.2 megapixel camera, and the first member of the family to feature TouchFLO 3D.
    * HTC Touch Pro, very similar to the Touch Diamond, with the addition of a keyboard, a microSD slot, a camera flash and more ROM and RAM, but removing the 4GB internal storage.
    * HTC Touch HD, a device with a much larger screen than its predecessors.
    * HTC Touch Viva, an update to the original Touch
    * HTC Touch 3G, similar to Viva, but with 3G connection capabilities
    * HTC MAX 4G, a device that has integrated GSM / WiMAX capability created specifically for the Russian market.
    * HTC Touch Cruise , and upgrade to the 2008 model featuring HTC Footprints, which lets you geotag and add text and sound recordings to photos to create a scrapbook of places visited.
    * HTC Touch Diamond2, an update to the Touch Diamond, featuring people-centric communication.
    * HTC Touch Pro2, an update to the Touch Pro, featuring people-centric communication and upgrades focused on conference-calling capabilities.
    * HTC Touch2, an update to the Touch, Touch Viva and Touch 3G - one of the first devices to be released with Windows Mobile 6.5.
    * HTC HD2, an update to the Touch HD, with the largest screen so far in the family despite being the thinnest member so far of the family. Powered by Qualcomm's Snapdragon, it is the first Windows Phone to feature HTC Sense.
    * HTC HD mini, A smaller version of the HD2, it is the second windows mobile phone ever with a capacitive touch display and the first to use an HVGA screen.