Page last updated at 17:51 GMT, Monday, 20 April 2009 18:51 UK

Phone apps 'birth of new industry'

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Sales in the world's mobile phone industry are expected to fall this year but downloads of phone applications is one area which is thriving.

Applications create new things to do on a phone and almost a billion of them have been downloaded to Apple's iPhone.

Rory Cellan-Jones examines the emerging new trend.

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