This DIY "Breadboard Phone" combines a Sparkfun LTE Stick ($150) with a microcontroller, antennas, audio hardware and a keypad to create something... unusual? Impractical? Still kind of cool? https://www.sparkfun.com/news/9414 #SparkfunLTEStick #BreadboardPhone #DIYPhone
Build Your Own Breadboard Phone! - News - SparkFun Electronics

Have you ever wanted to build your own phone from scratch? Preferably on the most ubiquitous electronics prototyping platform for maximum flexibility and m