One of the creators of the Arduino hardware platform, David Mellis, proposed a novel solution for lovers stand out from the crowd. Here are two drawings that can single handily make a mobile phone. The heart of the apparatus will be the Board Arduino Shield GSM, which contains everything you need to construct a regular mobile phone. The author states that the device will require about 200 United States dollars.
In the photos below you can see the first device of the Arduino platform.