DIY GSM cellphone using Arduino
A very simple DIY GSM phone designed by bobricius using Atmega328 and SIM800L Quad-band GSM/GPRS Breakout Module. The phone uses Avago HCMS 8 digit display and 16 keys for dialing numbers. The current firmware can perform basic tasks like answering to incoming calls, dialing a number, display battery, signal and network status.
DIY GSM cell phone