Now available on T-Mobile USA, the HTC Radar 4G is the first Mango device to be available in US stores, as opposed to one that can be upgraded over the air to Windows Phone 7.5. Matthew Miller on ZDnet has reviewed the handset, and while he's not sure that HTC have delivered enough to create a memorable Windows Phone, at the price point there's nothing inherently wrong with the smartphone.

That's not to say the Radar 4G has no issues. With only 8 GB of storage (effectively 6.7 GB after the Operating System grabs some space), it could be seen as being a bit on the small side. With lower specs all round, including the processor, will this be an issue? MIllar doesn't think so, but there are caveats:

Even though the Radar 4G has a 1 GHz Snapdragon processor, it still flies like all the other existing devices upgraded to WP 7.5 (Mango) so I am not concerned at all with the processor. The 5 megapixel camera takes much better photos than the 5 megapixel camera on the HD7 and I do not see any of the pink camera problem found on the HD7. It is not as good as the Amaze 4G though and I am thinking I may hold out for a Nokia WP with Carl Zeiss optics.

The Radar will have the Wi-Fi / Hotspot functionality switched on, although it will be limited to the slower rate of 14.4 Mbps. Available now on T-Mobile USA, prices start from $100 plus your monthly committment over twenty four months.