The Lumia 900 AT&T 4G Windows Phone has been spotted in an advertisement that we've not yet come across. What makes this different than the countless other videos we've already covered? It's a unique approach to show off the award winning polycarbonate design, with an emphasis on being "beautifully different" when compared to other handsets. This seems to be the new tag-line for the flagship phone as AT&T is also using it on their webpage for the device.

The AT&T 4G Windows Phone is set to launch on April 9th in retail stores, where consumers will finally be able to pick up their own Lumia 900. Nokia and the U.S. carrier are prepping everything for the release, so we expect the dates to be relatively accurate for early April.

Source: YouTube; thanks Ellis for the heads up!