“Activate the Advanced Caller ID” screen displays “Missing number. Retry” if Truecaller is not able to detect your carrier, if your carrier doesn’t support Conditional Call Forwarding, if we encounter some limitation with your country or your profile is already active on an other phone.
Verify your network is ON and you don’t rely on Wifi to receive calls.
Verify your carrier is properly detected
If you are still displayed please contact our support and we will help you.