Selected Nokia, HTC and Samsung devices offer best performance.
It has been a long time coming, but Microsoft has finally made use of its $8.5 billion Skype takeover, which closed in Q3 2011, and developed a beta app for Windows Phone.
Skype for WinPho Beta supports all of the usual Skype functions and has been integrated with a "clean and simple" Metro user interface.
Users can make video calls over 3G, 4G and wi-fi connections, and Skype says its "tested and certified devices for best performances" include:
* Nokia Lumia 710
* Nokia Lumia 800
* HTC Titan
* HTC Radar
* Samsung Focus S
* Samsung Focus Flash
The beta version is available from the Windows Phone Marketplace, while the 'gold version' is set for an April launch.