An interesting concept of a mobile phone (phones?) Called Duofone was presented on the popular site
Yankodesign.com by designer Daewoo Kim. As is often the case with concepts, Comrade Kim did not pay much attention to the stuffing of the device, focusing on the unique characteristics invented by him.

In addition to the futuristic appearance (Duofone in the pictures looks very, very stylish), this device is interesting primarily for its “paired” functions. In a single copy, this “tube” is just a beautiful bauble (the stuffing is not the main thing here, anyway it's just a concept). The functionality put in the name reveals in the presence of two Duofone. It's simple: devices can be combined into a single module. As a result, we get a twice larger screen, which is already useful for watching videos and reading books. In addition, the designer “laid” in his concept the ability to recharge a dead battery of one phone from the still-living battery of the second.

It is clear that Duofone is nothing more than a concept. And that even the prototype of this phone, most likely, will never be released. But the idea of "paired" devices that complement each other and, by the way, can serve as a wonderful gift to a couple of close people is very good.
via
Yankodesign.com