Download Call Protect or myAT&T to add Call Protect to your plan. You can block a specific number on the phone with your provider or manually block calls going through the app settings. If you log on to your AT&T settings online, you can manage the numbers you block by going through the “Device Support” tab.
Click the “My Preferences” tab and from there click “Limits and Permissions” and click “Block Voice. " From there, you can select the number you want to block.
There should be a small “i” icon next to every number on your contact’s list. Tap this number next to the contact you want to block. Scroll to the bottom of the screen and click “Block this Caller. " Tap to block the contact. [4] X Research source
You can also go to your “Phone” app, tap “More,” hit “Call history,” and then tap a call from the number you’d like to block. From there, tap “Block/report spam. "
You can sign up for Google Voice for free if you live in the US. Log into your Google Voice account and find the number you want to block. [8] X Research source Select the check box next to the number. Hit “block. " This will block this person from contacting you on any phones or electronic devices hooked up to your Google Voice account. [9] X Research source
Mr. Caller allows you to block calls and texts from specific numbers. It also allows you to automatically block unknown callers and block numbers from specific area codes. Truecaller is an app that can detect and weed out spam calls. It also allows you to block specific numbers. There are many free apps on the app store that can be used to block calls. Browse apps and read reviews to find an app that works for your needs. [10] X Research source
