Comment by GaggiX

A friend of mine (from Iran) managed to send me a few messages on January 18th via Telegram (Telegram is very popular in Iran) when the situation was though to be resolving and then nothing, blackout again.

And even when the blackout was not present, my friend had to used some complex V2Ray server (in Iran) to another server (in Germany) to connect and it was shared by other people, so if he cannot connect probably 99% of other people in his area cannot also connect outside.