China

Today is March 21st which means Microsoft took the big step in growing the Windows Phone ecosystem by releasing the mobile OS in mainland China.

Launching on numerous devices, including the HTC Triumph (aka TITAN), the Nokia Lumia 800c and offerings from ZTE (including the Orbit/Mimosa), Microsoft looks to regain some ground in the smartphone war by offering a variety of hardware running the refresh of Windows Phone 7.5 "Tango" (build 8773) in one of the largest emerging markets in the world.

WP Central

The press conference was held in Beijing in a makeshift warehouse with HTC, Nokia, ZTE, Qualcomm and Samsung all in attendance. In addition, Simon Leung Corporate Vice President, Chairman and CEO of Microsoft Greater China Region was also there to introduce the operating system to the audience. The press conference involved a demonstration of the OS, new hardware, Skydrive, Office as well as mention the more than 2,000 Chinese applications already in the Marketplace, including 50 top tier apps.

China

Overall, it looks to have been a successful launch though of course, it remains to be seen how keen on Windows Phone China is in the next few months as these devices go on sale around the massive country.

See more photos and coverage at WinP.cn; Thanks, Lucas, for the tip!