I'm wondering if we can use the same principle to design a miniature cell phone: can only text and make phone calls, very small screen, small keys, etc, using cheap components.
I've been thinking about this, too. On Linux this looks like a configuration nightmare of bodging together USB GSM/3G/4G/5G modems and piped commands [0].
Wow the price point is way above. I'm thinking about the mini phone in the movie Taken 2. I actually found a website to purchase a year ago but couldn't find it right now.
