UIQ was the result of 'Quartz', a user interface for pen PDAs that was one of the three provisional interfaces that were designed by Symbian Ltd. The first three Quartz phones never made it to market, including Psion's "Odin" in a joint venture with Motorola which was cancelled in January 2001, causing Psion's shares to deteriorate. Engineers thereafter created a lighter version of the software which was presented in 2002 and first shipped that year with the Sony Ericsson P800. Sony Ericsson was the main OEM using the UIQ platform on its products. Motorola also developed some products using UIQ but abandoned the platform in 2003 in favour of Linux, along with its stake in Symbian Ltd. In 2007 they returned to UIQ with the launch of the Motorola RIZR Z8. Nokia, which was using the competing Series 60 platform, created one UIQ device called the Nokia 6708, which is a rebadged BenQ P31 and was only released in the Asia Pacific region. Sony Ericsson bought UIQ Technology in November 2006 and the next year Motorola bought half of it. After the creation of the Symbian Foundation and their favouring of the S60 as the UI of choice, UIQ's future was uncertain as it could no longer develop the software for Symbian OS. Many Motorola UIQ devices planned for 2009 were cancelled, including the Motorola Razr3, codenamed "Ruby". UIQ Technology filed for bankruptcy in January 2009, which was the final nail in the coffin for the UIQ platform. Sony Ericsson moved on to Windows Mobile and the open source Symbian from the Foundation, whilst Motorola adopted Google's Android software. UIQ 3.3 was the last version of the platform, based upon Symbian OS v9.3. Developers that developed on the UIQ 3.x platform had a much better story than previous releases, since all UIQ 3.x phones were served by a single, core SDK.
applications can be written in C++ using the Symbian/UIQ SDK. All UIQ-based phones also support Java applications. UIQ phones employ touch screens with a resolution of 208×320 pixels and 240×320. Depending on the phone, the color depth is 12-bit, 16-bit, 18-bit, and 24-bit on some newer phones. For developers the significant items are:
Single SDK model - developers targeting core UIQ features can use the UIQ SDK to target any UIQ 3 device. Extensions targeting specific device features are available from phone manufacturers websites.
Increased tools support - developers can use whichever tools they are familiar with. Many of these tools are beginning to support extensive RAD features for both C++ and Java developers. Visual Basic programmers can use NS Basic/Symbian OS.
High volume, mid-range devices are now possible, to significantly increase the potential customer base.