Palm will tomorrow begin selling an unlocked version of its Windows Mobile-based 3G smart phone, the Treo 750. Not only unlocked, but also HSDPA-capable, the company said today.

The move brings carrier Vodafone's exclusive rights to sell the device, which it has marketed as the 750v since September 2006, to an end. The 750v - so far, at any rate - lacks support for the HSDPA download speed-boosting technology, but it will be part of the unlocked 750 - and, presumably, 750s offered by other carriers.

The unlocked version also ships with Microsoft's Pocket MSN instant messaging client, but that's not likely to be as big a turn-on as HSDPA support.

More details on the Treo 750 are available from Palm Europe's website here. The unlocked device costs around £429.