Actually, you can do the burner phone thing with Signal too. With Telegram, whoever gets that number later (if you discard it) can possibly also get your accoun

Actually, you can do the burner phone thing with Signal too. With Telegram, whoever gets that number later (if you discard it) can possibly also get your account and messages (though you’d get a warning). With Signal, even if someone did that, they wouldn’t get your past conversations and your account would get disabled the moment the other person activates.