Ben and Felix continue building the simple cell phone. Ben dials in the code to parse the data sent by the FONA to the OLED display and Felix solders the necessary components on the homespun, double-sided PCB. Once the PCB is complete, Ben can begin designing a case for the little phone. Using parts he 3D prints and laser cuts, Ben assembles the unit and is ready to re-live a simpler time with his new phone.