This simple phone has been designed for Cool,  a ZTE spinoff and codenamed F275.

The phone doesn’t have a SIM card but only a Wi-Fi connection. ZTE, with its provider Asia Cloud, is very strong in the Pearl River Delta area where they have a dense Wi-Fi network. That area is typically a factory area where the workers spend most of the year outside, going home just for Chinese New Year.

This phone takes advantage of the Wi-Fi network and it’s capable of making and receiving phone calls through it reducing to zero the monthly bill. 

Logo, App and corporate identity were part of the design as well.