what the heck is UIQ?
UIQ stands for User Interface Quartz, and was created by Symbian as one of the three original UI reference designs (Quartz for pen-based PDAs, Pearl for one-handed smartphones, and Crystal for communicators with keyboards). The other two reference designs never made it into a production device.
Nokia has created its own user interfaces that run on top of Symbian OS, including Series 60 (recently re-named S60), Series 80 and Series 90. Series 80 and 90 are no longer under active development, and all future Nokia smartphones will be based on Series 60.
Trivia: Series 60 borrows heavily from concepts originally defined in Symbian Pearl, Series 80 was based on and almost identical...