HTC Excalibur

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(Redirected from HTC S621)
HTC Excalibur (HTC S620)
ManufacturerHigh Tech Computer
Lifespansince 2006; 18 years ago (2006)
Operating systemWindows Mobile 5.0 / 6.0
Display16-bit color 320x240 TFT
InputIlluminated QWERTY keypad,
Side touch-bar
Camera1.3-megapixel (1280x1024)
Touchpad"JOGGR" side touch-bar
ConnectivityGSM with EDGE
GPRS 802.11g WiFi

The HTC Excalibur (HTC S620) is a smartphone model manufactured by High Tech Computer beginning in 2006. It is rebranded and sold as the O2 Xda Cosmo, the T-Mobile Dash,[1] the HTC S621 for Rogers Wireless in Canada, the HTC S621 for Suncom Wireless in the lower-eastern United States, the BT ToGo (as part of the BT Total Broadband Anywhere package), and the Dopod C720W. The model has been discontinued.[2][3]


The device runs the Windows Mobile 5 and 6 Smartphone Edition operating systems (AKU 3.0). It uses a 200 MHz Texas Instruments OMAP850 (ARM architecture) processor, with 64 MB of RAM and 128 MB of flash ROM. A microSD slot is also available for additional expansion capability.[4][5]

It includes a quad band (850 MHz, 900 MHz, 1800 MHz, 1900 MHz) GSM radio with EDGE, 802.11g WiFi support, and Bluetooth communications. The device syncs with ActiveSync or Windows Mobile Device Center (Windows Vista and Windows 7) over Bluetooth or USB. It also has GPRS/EDGE and Wi-Fi connections.[5]

Its successor, the HTC S630 (codenamed Cavalier) was released August 2007.[6]

T-Mobile initially shipped Windows Mobile 5 on all Dash devices but began offering existing Dash owners the ability to update to Windows Mobile 6 on May 4, 2007.[7][8]

Version of Windows Mobile 6.1 such as Kavanna's and Ricky's are available but not supported by T-Mobile. It also supports Windows Mobile 6.5.[9] This phone has also been ported to android by xda-developers.[citation needed]


Dopod C720W

The phone supports Bluetooth 2.0 without EDR[10] and could support these profiles:

  • A2DP-Source
  • AVRCP-Target
  • BNEP
  • FT-Client
  • FT-Server
  • GAP
  • Generic Object Exchange
  • HandsFree-AG (1.0)
  • Headset-AG
  • HID-Host
  • OPP-Client
  • OPP-Server
  • PAN-AP
  • SAP-Server
  • SDAP
  • Serial-DevA
  • Serial-DevB

New firmware versions disable nearly a half of these profiles, including FTP according to the pre-commercial review.[10]

See also[edit]


  1. ^ "T-Mobile Unveils a New Full-Featured Smartphone, the T-Mobile Dash" (Press release). T-Mobile. 2006-10-11. Archived from the original on 2006-11-10. Retrieved 2007-01-14.
  2. ^ "HTC S620 specs, comparisons, faq, opinions". GSMfind. Retrieved 5 September 2023.
  3. ^ "T-Mobile Dash specs, comparisons, faq, opinions". GSMfind. Retrieved 5 September 2023.
  4. ^ Gade, Lisa (November 17, 2006). "T-Mobile Dash (and HTC S620) - Windows Mobile Smartphone reviews". Mobile Tech Review. Archived from the original on 2007-01-11. Retrieved 2007-01-12.
  5. ^ a b Cha, Bonnie (October 11, 2006). "T-Mobile Dash (aka HTC Excalibur)". CNet Reviews. Archived from the original on 2008-01-24. Retrieved 2008-01-23.
  6. ^ Cha, Bonnie (August 3, 2007). "HTC Cavalier S630". CNet Reviews. Archived from the original on 2007-12-10. Retrieved 2008-01-23.
  7. ^ "Windows Mobile Upgrade". T-Mobile. Archived from the original on 2007-05-08. Retrieved 2007-05-07.
  8. ^ "Microsoft Reveals New Windows Mobile 6 Smartphone Software, Improves World's Fastest-Growing Mobile Operating System" (Press release). Microsoft. 2007-02-11. Archived from the original on 2007-03-10. Retrieved 2007-03-11.
  9. ^ "Excalibur - xda-developers". Archived from the original on 2010-05-06. Retrieved 2010-01-19.
  10. ^ a b Kotov, Anton. "Review of HTC S620 (Excalibur) communicator". Mobile Review. Archived from the original on 2007-06-21. Retrieved 2007-07-03.

External links[edit]