- UIQ - UIQ, short for User Interface Quartz, is a user interface for the Symbian OS developed by the Swedish firm UIQ Technology. It is most commonly used on Sony Ericsson's P series of smartphones, such as...

- UMA - Unlicensed Mobile Access is a technology that allows a UMA capable mobile phone to seamlessly switch back and forth between mobile phone networks and local wireless networks. WiFi and Bluetooth are c...

- UMTS - UMTS is a 3G networking standard used throughout much of the world as an upgrade to existing GSM mobile networks. UMTS makes use of WCDMA, a technology that shares much with CDMA networks used throug...

- uplink - The uplink part of a network connection is used to send, or upload, data from a mobile device to a remote server. The downlink connection on a mobile device is used receive data from the remote serve...

- URL - The Universal Resource Locator is used to give Web addresses for HTML, VRML, WAV and other files. It simply contains the Internet address of the machine containing the data and the directory path to t...

- USB - The Universal Serial Bus, or USB, standard defines a connection interface for computers and other electronic devices and peripherals. USB 1.1 and older devices are generally slow when it comes to mov...

- user interface - The user interface, or UI, of a device is the look and feel of the on-screen menu system. How it works, its color scheme, how it responds to button presses, all of these things are part of the user i...

- UWB - Ultra-WideBand is a class of technologies that transmit on a large range of radio frequencies at the same time for what are typically very short durations. Generally the technology is aimed at short ...

- VGA - A pixel resolution of 640 pixels by 480 pixels.br/br/ br/br/ ...

- Voicemail - A service offered by network operators whereby calls received when the mobile is in use, switched off or out of coverage can be diverted to an answering service which can be personalised by the user ...

- VOIP - VOIP stands for Voice Over IP. It is a system for transmitting voice over a packet-based data network, such as the internet or a mobile phone's GPRS connection.br/br/ Also known as: "Voice Over...

- VPN (Virtual Private Network) - A private data network that makes use of the public telecommunication infrastructure, maintaining privacy through the use of a tunneling protocol and security procedures. A virtual private network can...

- WAN - A wide area network, or WAN, connection is a network link that extends beyond the local LAN to other private or public networks, such as the Internet. An example of which would be a DSL network conne...

- WAP - WAP, the Wireless Application Protocol, is a standard method for using WML, an XML based markup language, to define documents and applications to be viewed on the small displays used by mobile devices...

- WCDMA - WCDMA stands for Wideband Code Division Multiple Access, and is the 3G technology, as defined by the ITU's IMT-2000 spec, that is used by UMTS and NTT DoCoMo's FOMA network. WCDMA makes use of many c...

- white balance - White balance is a camera setting that adjusts for lighting in order to make white objects appear white in photos. This is more difficult than it might seem due to the fact that light cast from diffe...

- wide angle - Wide angle, when speaking of cameras, refers to a low magnification lens that is able to direct a wide view of a scene to the camera's image sensor. What focal length lenses pass for wide angle depen...

- WiFi - A brand of wireless LAN (WLAN) technologies defined by the IEEE 802.11 group of standards. The two WiFi standards most commonly used by personal computers and mobile devices, such as phones, are 802....

- WiMAX - WiMAX is a wireless technology put forth by the WiMAX Forum that is considered by many to be the likely technology to be used as the basis of future 4G applications. It can be used in both point to p...

- Windows Mobile - Windows Mobile is Microsoft's platform for PDAs and smartphones. Windows Mobile 5 is the successor to the 2003 edition of the platform. Windows Mobile 6, codenamed "Crossbow", is the release slated ...

- WLAN - WLAN stands for Wireless Local Area Network, and is a more generic term that is often used to refer to 802.11 based (WiFi) networks.br/br/ Also known as: "Wireless Local Area Network" br/br/...

- WML - The Wireless Markup Language is the XML based language used to define documents, or pages, for use with a WAP browser.br/br/ Also known as: "Wireless Markup Language" br/br/ ...

- xHTML - xHTML is an XML-compliant version of the well known HTML document language used to build web pages. Most modern web browsers can read xHTML web pages as well as xHTML pages. xHTML is particularly we...

- XML - XML is a document markup language that allows documents and data in general to be written in a format that can be parsed by machines as well as generally understood by humans. It is particularly suit...