> just you wait until manufacturers of "internet of shit" things go really evil, and integrate low cost LTE radios into them with their own billing/centralized management/VPN system.
Why bother? They'll iust use your neighbor's wifi (at extra rf pollution cost to your house) or the surveillance system on the streetlamp outside being paid for by your tax money
It's impossible to install fully FLOSS OS on a typical phone, due the proprietary hardware drivers. The latter force you to buy new hardware every few years. Consider a GNU/Linux phone, Librem 5 or Pinephone, instead.
Why bother? They'll iust use your neighbor's wifi (at extra rf pollution cost to your house) or the surveillance system on the streetlamp outside being paid for by your tax money
or remove the opt out option from 'your' phone