Due in stores next week is the Nokia 6600, the company's attempt to produce a phone for the corporate market.

Essentially, it feels like the 3650 (the company's rather large handset with its unusual keypad) shoehorned into a wide, though not very deep, casing. It certainly fits comfortably in the palm. The 6600 uses the same Symbian 7 operating system as the 3650/7650 but with a slightly different interface.

It is simple to use, too, with prominent, yet responsive, keys and a small protruding menu control button - which is a clear advance on the 3650's four- way rocker switch. Like the 3650, it has a formidable array of features, including a 640x480 still camera and a video camera, both of which feature a 2x digital zoom.

Also on board are Java, a RealOne audio/video player, an XHTML web browser and POP3 email support. The key difference is the screen, which boasts a resolution of 176x208 pixels (with 65k colours) and is much higher quality than the 3650 and rivals such as the Handspring Treo 600.

To underline its corporate credentials, the 6600 has a superb connectivity suite, with Bluetooth and infrared alongside support for mobile Virtual Private Networks. It also claims to have four days' battery life.

This is clearly Nokia's best smartphone so far. How successful it will be could largely be down to whether users prefer the Windows/Palm-based operating system and applications of rival devices to the Symbian system here.