If you’re tired of the increasingly unwieldy fat hand-sized phones getting closer to the size of a laptop computer and you’re longing for something slim and lightweight, this could be a solution.

Your phone’s ‘little sister’ links up via Bluetooth and can make calls and send texts. It’ll even set off the shutter on the main phone’s camera – which is sure to come in handy for taking group photos, spying on the neighbours, etc.

The mini companion will be bundled with HTC’s latest offering in China, the Butterfly.

But do people really need another gadget to lose or drop in a puddle? Only time will tell.