The Sony Ericsson W950i is the third UIQ 3 smartphone based on Symbian OS v9.1.

One of its distinguishing features is the 4 GB internal flash memory, perfect for media storage.

With many core similarities to the M600, the W950 also uses the UIQ 3 software platform, which is based upon Symbian OS 9.1.

The W950 runs on the Nexperia PNX4008 ARM9 208 MHz processor[1] from Philips and has 64MB RAM and 128MB Flash ROM.

Since the W950i is based upon the UIQ platform, it is easy to make third party applications that can be downloaded to the phone.