The HTC Blue Angel is a GSM Windows Mobile 2003 Second Edition PDA

Personal digital assistant

A personal digital assistant , also known as a palmtop computer, or personal data assistant, is a mobile device that functions as a personal information manager. Current PDAs often have the ability to connect to the Internet...

-phone, manufactured by High Tech Computer Corporation. It has a CDMA EVDO variant called the HTC Harrier, the Harrier does not have Wi-Fi

Wi-Fi

Wi-Fi or Wifi, is a mechanism for wirelessly connecting electronic devices. A device enabled with Wi-Fi, such as a personal computer, video game console, smartphone, or digital audio player, can connect to the Internet via a wireless network access point. An access point has a range of about 20...

 like the Blue Angel does. Both have the same housing. It is sold by many different vendors under the names of O2 XDA IIs, Orange SPV M2000, Dopod 700, Qtek 9090, T-Mobile MDA III, Siemens SX66, i-mate PDA2k, Vodafone

Vodafone

Vodafone Group Plc is a global telecommunications company headquartered in London, United Kingdom. It is the world's largest mobile telecommunications company measured by revenues and the world's second-largest measured by subscribers , with around 341 million proportionate subscribers as of...

 VPx, Verizon

Verizon Wireless

Cellco Partnership, doing business as Verizon Wireless, is one of the largest mobile network operators in the United States. The network has 107.7 million subscribers as of 2011, making it the largest wireless service provider in America....

 XV6600 (Harrier), Sprint

Sprint Nextel

Sprint Nextel Corporation is an American telecommunications company based in Overland Park, Kansas. The company owns and operates Sprint, the third largest wireless telecommunications network in the United States, with 53.4 million customers, behind Verizon Wireless and AT&T Mobility...

 PPC-6601 (Harrier) among others. Despite all the different model names and housing appearance, they all have similar hardware specifications.

Specifications

• Dimension: 125 x 72 x 19 (L x W x T mm)
• Weight: Approx. 205 g
• Operating systems:

Windows Mobile 2003 Second Edition. Unofficial cooked roms for Windows Mobile 5, 6 and 6.1 are available, Recently, Windows Mobile 6.5 beta has been leaked for blue angel and is in developing phase at the xda-developers community.

Unix

Unix

Unix is a multitasking, multi-user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs, including Ken Thompson, Dennis Ritchie, Brian Kernighan, Douglas McIlroy, and Joe Ossanna...

: Android

• Processor
  Microprocessor
  A microprocessor incorporates the functions of a computer's central processing unit on a single integrated circuit, or at most a few integrated circuits. It is a multipurpose, programmable device that accepts digital data as input, processes it according to instructions stored in its memory, and...
  
  : Intel(R) XScale
  XScale
  The XScale, a microprocessor core, is Intel's and Marvell's implementation of the ARMv5 architecture, and consists of several distinct families: IXP, IXC, IOP, PXA and CE . Intel sold the PXA family to Marvell Technology Group in June 2006....
  
   PXA263 400 MHz CPU (possible overclock to 600MHz)
• Memory: Flash ROM:96 MB, RAM:128 MB SDRAM
• Memory expansion: SDIO/MMC card slot
• Camera: VGACamera (Siemens's is not equipped with it)
• Standard battery capacity: 1490mAh
• Display: QVGA Transflective 65k Colour LCD, 3.5 inch, 240 x 320 pixels
• Wireless connectivity: GSM/GPRS and Wi-Fi 802.11b (Blue Angel), or CDMA EVDO (Harrier); plus IrDA
  IRDA
  IRDA may refer to:* Infrared Data Association, in information and communications technology , a standard for communication between devices over short distances using infrared signals...
  
   and Bluetooth
  Bluetooth
  Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances from fixed and mobile devices, creating personal area networks with high levels of security...
  
  on both models