Although Memory Stick PRO Duo comes in larger capacities, the maximum supported by the P910i is 2 GB.

[citation needed] It is powered by an ARM9 processor clocked at 156 MHz and runs the Symbian OS with the UIQ graphical user interface.

It comes in three versions: One of the key aspects of the P910 is its ability to input text via several methods: multi-tap and T9 text input using the numerical keypad, hand-writing recognition with the pre-installed Jot-Pro software and touchscreen, virtual keyboard on screen and the new QWERTY keyboard on the inside of the flip.

Other enhancements (compared to the P900) include support for HTML browsing, a new numerical keypad with larger keys and a slightly changed outer casing.

Other competitors include several PDA-phones powered by Windows and manufactured by Taiwan-based HTC.