There are a lot of regional variations on this and the only regions I am vaguely familiar with are a couple countries in europe and the US/Canada, that said: >

There are a lot of regional variations on this and the only regions I am vaguely familiar with are a couple countries in europe and the US/Canada, that said: > there are plenty of other messaging apps that are much more established than Telegram. Not where I live, the only comparable app is whatsapp and after that various social media platforms probably. > [E2EE] Doesn't seem to have been a problem for e.g. WhatsApp. It is, porting backups between phones (last time I tried) requires both phones to be active. > and it's not like people were using SMS/phone calls until Telegram came along with the revolutionary new idea of an internet messaging app. They were using whatsapp, which in my opinion is worse than telegram and uses E2EE as a PR shield. I personally do not trust facebook to deliver a trustworthy app (they would have to be OSS with reproducible builds at least) I do not care that my messages are encrypted on their servers, they can steal them from my phone storage directly. It is a matter of lack of trust towards facebook.