Cell phones will replace the personal navigation device (PND) as the primary GPS device by 2011, according to the research firm iSuppli.

The firm predicts that by then, cell phones will account for 36 per cent of the GPS market, compared with 30 per cent for PNDs.

PNDs today account for half of global navigational units sold.

The report also forecasts price drops among PNDs that will lead to smaller manufacturers selling out to larger hardware companies over the next couple of years.

The research comes as LG predicts smartphones will replace digital cameras.

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