Everyone I want to talk to uses Telegram, and those who didn't (a few years ago) I convinced. "You want me to install Skype/Whatsapp/something, but why should I rather than you?"

It helped that most people saw the advantages that Telegram had, especially back then (before whatsapp cloned everything). Not to say that Telegram didn't clone whatsapp to a large degree, but the introduction of telegram definitely made the market innovative again.

Well, almost everyone here in Iran uses Telegram. They estimate tens of millions of users, which is practically everyone with a smartphone. It’s channels are extremely popular too. They’re a major main source of content and news for a lot of users.