Somewhat out of the blue, Sony has announced a new smartphone in the form of the Xperia T3. The UK release date and price have been confirmed. See also: 28 best smartphones: The best phone you can buy in 2014. 

Smartphone makers like to make big claims with their devices and Sony says that the new Xperia T3 is the world's slimmest 5.3in smartphone around. Well at 7mm that might be the case but we're struggling to think of any other devices with the same display size (let us know in the comments).

Carphone Warehouse has confirmed that the Xperia T3 will launch on 24 July saying it is: "exclusive and available from £22.50 a month with no upfront cost and pre-order customers will also get a free Sony Smartband worth £79.99."

"Xperia T3 has been crafted with attention to detail for those who know how to appreciate distinctive design in their everyday life," says Calum MacDougall, director of Xperia marketing at Sony Mobile. "The combination of this beautiful technology and the premium design ensures the T3 immediately stands apart from the competition."

As well as a 5.3in screen, which has a 720p HD resolution, the Xperia T3 is specced up with a 1.4GHz quad-core processor, 8Mp Sony Exmor RS camera and 8GB of internal storage.

Sony Xperia T3 thin smartphone

The size and spec mean the Xperia T3 is like a cut down version of the flagship Sony Xperia Z2, but it still has support for 4G LTE networks, NFC and steel frame design. The device weighs 148g which is almost the same as the LG G3 and will come in black, white and purple.

The Xperia T3 comes pre-loaded with Android 4.4 KitKat and Sony's software features including Social live, AR effect, Timeshift burst, Creative effects and Easy transfer.