UIQ - definition
UIQ stands for User Interface Quartz, was a software platform based upon Symbian OS. It was designed and created by UIQ Technology AB. It is a GUI (Graphical User Interface) which includes additional elements to the core operating system. Also, in easier words it can be said that it is an touch controlled user interface of Symbian OS enabled devices. Sony Erricson P800 was the first handset running UIQ, in that devices UIQ used to run on top of Symbian.