Specifically for telegram there's a (rather expensive) crypto-based no-sim option: https://telegram.org/blog/ultimate-privacy-topics-2-0/ru?setln=en#sign-up-wit

Specifically for telegram there's a (rather expensive) crypto-based no-sim option: https://telegram.org/blog/ultimate-privacy-topics-2-0/ru?setln=en#sign-up-without-a-sim-card https://telegram.org/blog/ultimate-privacy-topics-2-0/ru?set...