Three phones have been announced by Sony Ericsson at Mobile World Congress, please check out the pictures and videos below

Sony Ericsson Vivaz^TM pro, announced today, adds a QWERTY keyboard to the touch screen offering, delivering a user experience optimised for messaging and entertainment. The full QWERTY keyboard allows consumers to communicate quickly and efficiently via email, SMS or social networking updates.

Today sees the announcement of Xperia^TM X10 mini and X10 mini pro, compact versions of Xperia^TM X10, which will deliver powerful and application packed mobile phones into the industry. By introducing mobile phones that are both compact and clever, Sony Ericsson is challenging the norm and defining a brand new offering that combines high specification features with a version of Sony Ericsson's powerful UX platform specifically designed for smaller devices.

Xperia^TM X10 mini and X10 mini pro with slide out QWERTY keyboard offer an open and intuitive communication entertainment experience and build on the human curvature design philosophy debuted by the Sony Ericsson Xperia^TM X10. Combining the Android platform with signature applications and a customisable UX platform, communication truly becomes entertainment with these new mobile phones. To enhance the experience, pick and choose from a multitude of applications at Android Market^TM and co-create a mobile phone experience that is entirely unique. Users can go one step further and customise the home screen's four corners and widgets to access the most needed applications for limitless possibilities.

source: unwiredview