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USB modems exist and work on Linux[0]. The Steam Deck is a Linux computer with a USB port. You could be living this reality today. [0] https://www.thinkpenguin

• seba_dos1 1y ago
  They work fine for data and SMS, but it gets complicated once you need audio routing (it's rare for a modem to expose audio over USB) or waking up from low power mode to answer the incoming call. Could be done with M.2 USB modules and some dedicated controller in-between though.
  • mrheosuper 1y ago
    HID USB devices can already wake up computer from sleep, so i dont think we need M2 here. Also i dont think routing audio is problem, the dongle could represent itself as external audio device, like those external usb dac.
    • seba_dos1 1y ago
      Of course it could! Now find one that does.