UIQ

It is a graphical user interface layer that provides additional components to the core operating system, to enable the development of feature-rich mobile phones that are open to expanded capabilities through third-party applications.

[1] Engineers thereafter created a lighter version of the software which was presented in 2002,[2] and first shipped that year with Sony Ericsson P800.

[3][4] Sony Ericsson was the main OEM using the UIQ platform in its products.

Motorola also developed some products using UIQ, but abandoned the platform in 2004 in favour of Linux, along with its stake in Symbian Ltd.

For developers, the significant items are: The following is a list of smartphones that have been announced/confirmed as running the newer UIQ 3.x platform.