It’s possible to block unwanted calls straight from your device.
For iPhone, iPad and iPod touch, you can block and manage phone numbers, contacts and emails. Here’s how to block phone numbers on your Apple device.
For Android devices (other than Samsung devices), you can block and manage phone numbers by using ‘Phone by Google’ app which is installed in all Google Pixel phones and can be installed in other Android phones from Play Store.
Here’s how to block a phone number on your Android device using the Phone by Google app: Block and unblock a phone number using Google Phone app
For Samsung phones, you can use your phone app for blocking unwanted calls. Here’s how to block and unblock phone numbers.