PuzzlePhone
The PuzzlePhone was an uncompleted modular smartphone project by Circular Devices. The device's design was intended to allow its main parts, which would be specific modules, to be easily assembled and replaced by the user.
The phone's modular construction was intended to allow easy switching between Sailfish OS and Android mobile operating systems.
As of May 2017, the project is delayed indefinitely due to lack of funds.Construction
The main modules were intended to be: