Based on playing with my little adafruit cell chip I have, I can talk to it pretty simply by sending it standard modem commands. I don't know how this exactly

Based on playing with my little adafruit cell chip I have, I can talk to it pretty simply by sending it standard modem commands. I don't know how this exactly lines up with a more modern phone but it's pretty cool. You could theoretically talk to it with something like this too https://geoffg.net/terminal.html https://geoffg.net/terminal.html