UIQ is a user interface platform for OS Symbian.

UIQ offers users enchanting interaction and is designed to offer easy access to the wide variety of data services in 2.5 and 3G networks.

UIQ based phones are powerful and give access to enterprise applications, email, multimedia clips and web pages as well as personal information management; e.g. address book, to-do lists and calendar. The excellent interaction and graphical capabilities also provide support for advanced gaming possibilities.

UIQ offers mobile phone manufacturers a solid foundation to rapidly build attractive and cost efficient devices. UIQ licensees are given extensive rights to customize the UI to fit into their product portfolio and branding strategy.

UIQ includes support for the latest and emerging wireless standards and comes with a set of essential and well-integrated applications, thereby enabling fast device integration. Through the open platform of UIQ, available to 3rd party developers, a multitude of applications and services are offered by various software companies.

UIQ Phones :
Sony Ericsson P800 - P900 - P910
Motorola A1000 - A925 - A920
BenQ P30
Arima U300

UIQ version :
UIQ 2.1 – Upgrade release (2003)
For Symbian OS 7.0
Java MIDP 2.0
Integrated telephony application
SyncML upgrade
SIM management
Themes

UIQ 2.0 – Multimode release (March 2002)
For Symbian OS 7.0
Multimode Telephony API with CDMA
Flexible screen size – enables smaller configurations
PersonalJava 1.1 and Java MIDP 1.0
Upgrades/additions of mobile standards, such as MMS, Bluetooth, SyncML, Web

UIQ 1.1 – Packet-enabled release (April 2001)
For Symbian OS 6.1
Triple-band GSM, HSCSD, and GPRS
Bluetooth v1.0b compliant
WAP 1.2.1

UIQ 1.0 – Mobile telephony release (September 2000)
New 1/4 VGA User interface (240*320 pixels) for Symbian OS v6.0
Integrated telephony capabilities
PersonalJava 1.0 and Javaphone 1.0
Strong focus on usability

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Note :
UIQ is not a Operating System - but Interface between Phone Architecture + OS Symbian and User. Like Nokia , this vendor have 3 base user interface - they are S40 , S60 and S80 - and for Siemens they have user interface called SX1.