“When you use Signal, your data is stored in encrypted form on your devices. The only information that is stored on the Signal servers for each account is the phone number you registered with, the date and time you joined the service, and the date you last logged on.”
I don’t associate telegram with security nor privacy, I know its flaws, I just choose to use it instead of anything meta related. I understand it’s bad company X versus bad company Y. But as I said a perfect messenger app that has no user base is useless. I really wish things like signal or, even better, sessions became the mainstream way to communicate.