Photos: HTC unveils Titan and Radar Mango smartphones

First handsets to run next version of Microsoft's Windows Phone OS...

HTC has unveiled two new smartphones, the HTC Titan (pictured above) and the HTC Radar, running the latest version of Microsoft's Windows Phone operating system, codenamed Mango.

The phones will be available in Europe from next month, and will be among the first devices to use the Mango which Microsoft is hoping will finally give it a serious chance at taking a serious slice of the mobile market.

The Titan sports HTC's largest phone screen, a 4.7-inch display wrapped in a 9.9mm aluminium case with 16GB of storage onboard.

It also features an eight-megapixel rear-facing camera and 1.3 megapixel front-facing camera for video calls.

The handset is aimed at business users, and sports a "huge" virtual keyboard.

Both phones have a built-in camera button which allows users to take pics without having to unlock the phone. The HTC Radar is pictured above.

The HTC Radar is more of a consumer phone, with up to 8GB of storage, a 3.8-inch touchscreen and a five-megapixel camera.

Both phones also include HTC Watch, the company's video service.