This is our working cellphone we built ourselves! It can make calls and receive calls on the 2G cell network and has a TFT touch screen (https://en.wikipedia.org/wiki/TFT_LCD). We want to update it to use a more modern network like 3G or 4G and also want to figure out how to do text messages. It was built using an Arduino (https://www.arduino.cc/) and a Fona 2G card.
Homemade Cellphone 2G
