Upcoming modular phone.
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Pro Modular design
The Puzzlephone has 3 swappable hardware modules.
Pro Will provide a choice of operating systems
While the initial version will ship with Android, Puzzlephone will not be locked to a single operating system with later iterations.
Con Provides less modularity than Project Ara
The phone consists of just 3 hardware modules - "The Spine", "The Hear" and "The Brain". The Spine has an LCD, buttons, speakers and a microphone, The Brain has CPU, GPU, memory and camera, and The Heart has a battery and any extra functionality depending on the module.