Sony has its first "solo" Mobile World Conference appearance this year, with new Sony branded smartphones-- the Xperia NXT series S, P and U.

Previously seen at CES 2012, the Xperia S is the higher end model. It has a 4.3" 720p display using "WhiteMagic" technology (supposedly making the display more power efficient and readable in sunlight), together with a 1.5GHz dual-core processor. It runs on Sony-themed Android 2.3 (Gingerbread), and has a sleek form factor reminiscent of the Bravia TV line.

The Xperia P is the "middle" model, packing a 4" WhiteMagic display inside an aluminium unibody. It also has an 8MP camera and a dual-core processor, and runs on the same Sony-themed Android version as the Xperia S.

On the other hand the Xperia U appears ideal for media use, with xLoud and Sony 3D surround sound and DLNA-powered wireless music streaming.

All 3 models integrate with Sony Entertainment Network and carry NFC and HDMI connectivity. A separate SmartDock accessory allows display mirroring on HDTVs, as well as the connection of either mouse or keyboard.

The Xperia S ships now, while the P and U should be available by Q2 2012.

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