The smartphone also includes a 5-way Jog Dial for navigation and gaming. The Jog Dial is nicely integrated with the Symbian OS, so it is useful in most applications. And as a Symbian OS 7.0. device, the P900 can run Java applications, including games, as well as many other Symbian applications currently available.

Memory has been increased from 32 MB in the P800 to 48 MB (16 MB available to the user) in the P900. Additional storage space is available by using a Memory Stick Duo, which are about half the size of standard Memory Sticks.

An adapter is available to allow you to use a Memory Stick Duo cards in a standard Memory Stick slots, so you can transfer content, such as audio and image files, from your phone to your desktop or MP3 player for example. The P900's expansion slot also lets you use Memory Stick peripherals.

A 32 MB Memory Stick Duo is included with the P900 and Memory Sticks up to 128 MB capacity are supported. Home videos can be scaled down using Packet Video recorder on a PC and you can listen MP3 music files. As with the P800, the P900 has the same 156 MHz ARM9 CPU.

The P900 Opera browser supports HTML, WAP and cHTML content types. When viewing Internet content through this browser, pages are reformatted to fit inside the screen width, eliminating the need for horizontal scrolling. Unfortunately you can't view Web pages in landscape mode, which would be nice considering the good-sized width of the P900's screen.

While the P900 is a smartphone that does a good job of integrating PDA and mobile phone capabilities, its price tag and the fact that it is based on the Symbian platform may make it a hard sell in the United States, where users are much more familiar with the Palm and Windows Mobile platforms. In fact, Palm-based smartphones, including the popular Treo 600, the best PDA/phone combo we've come across, and devices from Samsung and Kyocera, dominate the U.S. market.

In addition, there are far more third-party applications for the Palm OS than with the Symbian platform. This could also prove to be a limiting factor for some. Nevertheless, in Europe where smartphones are far more common and Symbian dominates, the P900 should be more attractive.

As for the price, though the P900 lists for over $700, it can be bought for between $600 and $700 with a service plan from Cingular or T-Mobile.