If you have an iPhone 11, there are a few ways to delete blocked numbers.

  1. Open the Settings app and select the General tab.
  2. Scroll down and select Block Numbers.
  3. Toggle the block number off and then tap Remove from List.

Open the Phone app. Tap the Contacts tab. Tap the Blocked Contacts tab. Tap the contact you want to unblock. Tap Unblock at the top of the screen.

How to Block Contacts Messages and calls iPhone 11

Check out How To Organize Iphone Photos On Computer?