For Mr. Number to block calls and provide caller ID on iPhone, all Mr. Number switches must be turned on in your Phone Settings.
Enable call blocking and identification
- Open the iPhone Settings app.
- Go to Phone → Call Blocking & Identification.
- Turn on all switches listed under Mr. Number.
If the switches won't turn on
If you're having trouble enabling the switches after installing or updating the app, try the following:
- Wait at least one hour and try again. In some cases this can take up to 24 hours to resolve on its own.
- If the switches still won't enable, restart your iPhone and try again.
- If the issue persists, see Mr. Number is not working for a full reinstall guide.