How not to lose telegrams when you lose your SIM phone number?

Question

Telegram

A disposable SIM card, which I bought to sign up for a couple of sites and chats, and which I don’t mind losing. And I won’t be able to restore it, because I’m passing through the country in which I bought it.

My telegram account sometimes logs out by itself. Or even the smartphone itself with the telegram I can lose. Yes, she also, as I see on their website, has roaming only in about 20 countries. That is, in other countries it will not catch at all, which is equivalent to the fact that you cannot count on it.

How can I make sure that in case of

a) loss of a SIM card
b) or loss of the smartphone itself with a telegram on it
c) or if he decides to log out for some reason

... I can restore the telegram account on a new smartphone?

The only way withgiven conditions is to keep another session active somewhere else - on a desktop, or another smartphone, right? That is, even if one of the devices is lost, I can buy a new one and get a temporary code for the 1st device? And so I have 2 devices again, with a telegram.

Answer 1

The only working way at the moment you described in the last paragraph.

Answer 2

No, absolutely nothing.