Show HN: Hacking a $20 4G wireless hotspot into a texting device

A hobbyist hacker converted a cheap $20 4G wireless modem into a texting device by combining it with a Clicks keyboard for iPhone and an Adafruit SHARP Memory Display. The project involved installing Linux on the modem using OpenStick, treating the Clicks keyboard as a standard USB device, and integrating the components into a single portable texting machine. The creator documents the technical challenges of working with device drivers and device trees while building this unconventional communication device.