It's technically possible to use a mobile voice channel for dial-up, but very difficult. The GSM voice channel bandwidth is 2400 baud, and it's a lossy-compress

It's technically possible to use a mobile voice channel for dial-up, but very difficult. The GSM voice channel bandwidth is 2400 baud, and it's a lossy-compression codec. In the best case you'd get around 1kbps. But you could try it... disassemble an old Nokia, hook the mic and speaker up to a circuit that regulates the voltage and resistance to that of a phone line off the hook, and hook that up to an old analog modem (or use some software to make your computer's sound card act like an analog modem and skip the line regulator). I'm sure someone has tried this but I can't find it from googling.