Since the last update Telegram shows your phone country to the other party on new message Update: more details from the last blog post "Know Who’s Messaging You with Contact Confirmation Now, when someone outside your contacts messages you for the first time, you’ll see a detailed info page that helps you spot scams, avoid impersonators, and verify who you're talking to — before you even reply. This page gives you essential insights about the sender, including: Their country (based on their phone number). Any shared groups you have in common. When they joined Telegram — so you can spot fresh accounts. When they last updated their username or profile picture — a handy way to detect sudden identity changes. Clear indicators showing whether the user is an official account, has third-party verification or is just a regular user."