Oh, look, yet another use of a Raspberry Pi that I did not need….
https://learn.adafruit.com/piphone-a-raspberry-pi-based-cellphone
Ever wanted to build you own cellphone? Well now you can with this guide that uses a Raspberry Pi, PiTFT, and a FONA to make a functional cellphone that you can call your friends with!
Things You’ll Need:
Raspberry Pi computer, the Model B or Model B+. Resistive 2.8″ PiTFT or Capacitive 2.8″ PiTFT – 2.8″ TFT touchscreen for Raspberry Pi. The capacitive version looks nicer and has a glass top that does not require pressing down, but it’s more expensive! SD memory card, 4GB or larger. 1200mAh Lithium Polymer battery DC-DC converter FONA + Antenna “Hands-free” Headphones with Microphone You can use a DC-DC converter to give us 5V for the Raspberry Pi. Or just go with a big USB battery pack such as this one, but it won’t look as tidy.
I really should stop with the sarcasm on these weird uses of these small computers.
I’m sure, someone, somewhere will be building this for who know why….. I mean you can go to a any Op Shop (Thrift store in USA) and get a perfectly good flip phone for 5 bucks or a smart(ish) phone for about 10 bucks.
Much better battery life, much more durable and just better all round, but hey, you did not build them, you just saved them from landfill.