Openors $ 12 Gongkai Phone

For the price of a couple of cups of coffee, you get a full-fledged phone with a two-color OLED screen, Bluetooth and the ability to play MP3 music. All this in a transparent green case.

According to bloggers , the estimated cost of the Gongkai phone is about $ 10, that is, it also sells with a good margin of 20%. The package includes a charger, a USB cable and a protective silicone case.

Interestingly, no screws or screws are used in the assembly of the device; parts of the case simply snap in with a mechanism. The fastening of internal components probably also reduces the cost of production - the screen, lithium-polymer battery and other parts are simply soldered to the motherboard.

The comparison with the 3rd generation Arduino Uno also looks interesting:

Spec	This phone	Arduino uno
Price	$ 12	~ $ 20
CPU speed	260 MHz, 32-bit	16 MHz, 8-bit
RAM	8MiB	2.5kiB
Interfaces	USB, microSD, SIM	USB
Wireless	Quadband GSM, Bluetooth	-
Power	Li-Poly battery, includes adapter	External, no adapter
Display	Two-color OLED	-

UPD from BarsMonster : «it is open source in Chinese"