How do I block unwanted or spam calls on my mobile device?

1. Check your device’s user guide to identify the method for blocking unwanted calls.
2. Check with your phone carrier to confirm which services they offer for preventing and blocking unwanted calls.
3. Check if your phone has a call blocking app that allows you to block numbers manually, or programs that you can use to automatically block unwanted calls.
4. Activate do not disturb mode on your phone when needed to prevent unexpected calls.
5. Consider using call blocking services or software for blocking unwanted calls.