Sony Ericsson Aspen is the first Windows phone which is powered by the newly released Windows Mobile 6.5.3. Sergey Kuzmin over at Mobile-review has got hold of a pre-release test unit, which he has lovingly demonstrated running WinMo 6.5.3. He has also nicely put it up against various different handsets from Sony Ericsson, Nokia and RIM to give us a good idea on how does it actually size up against different handsets.

Windows Mobile 6.5 (or 6.5.3) Build 28002 is out already and it finally brings a new native on-screen keyboard which is optimized for more finger friendly touch operations. Windows Mobile OEMs like HTC, Samsung and Sony Ericsson have already been shipping their newer handsets with skinned version of the original stylus-friendly keyboard for finger friendly navigation. But now from Windows Mobile 6.5.3 Build 28002 and onwards, Microsoft has finally updated the age old on-screen virtual keyboard that has been a feature of Windows phones since Pocket PC’s era.