If you like your phones thinner than Kate Moss, get yourself a Modu. The device has apparently entered the Guinness Book of Records as the lightest mobile phone in the world. According to the book, the device measures 72.1 mm x 37.6 mm x 7.8 mm - smaller than a credit card.

The mobile was launched at Mobile World Congress earlier this year and weighs just 40.1 g. Modu, as the name suggests, is a modular mobile, so users looking for a bigger or more feature-heavy device can put the device into a modu jacket - a type of shell.

It’s a great concept - you can put the phone into a clamshell jacket or a bracelet jacket, depending on what form factor you fancy. In its unjacked form, though, it looks like it might be a little too easy to drop down the back of the sofa, never to be seen again.

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