If you previously had it ON: Use the “Delete Synced Contacts” option within the same settings to remove any previously uploaded contact data from Telegram’s servers. Remember to then keep the “Sync Contacts” toggle OFF to prevent re-uploading.
This is vital for overall account security, indirectly protecting your number from unauthorized use.
Tip: Set a strong password and, crucially, add a recovery email address. This acts as an extra layer of defense. Even if someone somehow intercepts a login code sent to your phone (e.g., via a SIM swap attack), they still cannot access your account without this 2FA password.
Control Invitations and Calls
Limit who can add you to groups or call you.
Tip: Set “Who can add me to telegram number database group chats?” to “My Contacts.” This is highly effective in preventing unwanted spam group additions.
Tip: Set “Who can call me?” to “My Contacts” or “Nobody.”
Be Cautious with “People Nearby”
This feature can expose your approximate location and presence to others.
Go to: Contacts > People mobile numbers and the rise of mobile commerce Nearby (from the main menu)
Tip: Only enable “People Nearby” when you specifically intend to meet or connect with people in your immediate vicinity. Always tap “Stop showing me” clean email when you’re done using it to remove your visibility.