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Mobile giants unveil latest designs in Barcelona

Hundreds of firms involved in the mobile phone and tablet industry have gathered in Barcelona to vie for attention at the annual Mobile World Congress.

Over the next few days, a raft of new phones will be unveiled at the show.

The BBC's technology correspondent Rory Cellan-Jones has been to some of the preview events and asks whether there is much difference between the latest designs.

  • 27 Feb 2012