The makers of Ubuntu have demonstrated the operating system turning a smartphone into a desktop PC.

The parent company Canonical is one of many hoping to replace phones, tablets, laptops and computers with just one device.

But there is not yet a phone/PC hybrid running Ubuntu with the necessary monitor port available for consumers to buy.

The demonstration at Mobile World Congress featured the Linux-based OS loaded onto an old handset.

BBC's Chris Foxx asked Ubuntu's founder Mark Shuttleworth whether the firm would be playing catch-up with HP which announced a hybrid handset running Windows 10 at the Barcelona tech show.

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