New contender for smartphone crown?

The Barcelona Mobile World Congress is the biggest show in the mobile phone industry's calendar.

With Apple and Samsung far ahead of their rivals in the smartphone market, much of the focus is on the battle for third place.

Nokia and Blackberry are trying to regain lost ground, while China's Huawei is the surprise contender to be the big new force in mobile phones.

Rory Cellan-Jones reports.