This wikiHow teaches you how to remove a number from the block list on your iPhone so you can call and message the number again.
Step
Step 1. Open the iPhone Settings menu
It's a gray gear icon on your device's home screen.
Step 2. Swipe the screen and touch Phone
This option is at the bottom half of the page “ Settings ”.
Step 3. Touch Call Blocking & Identification
This option is under the “ Calls ”.
Step 4. Touch Edit
It's in the upper-right corner of the screen. A red circle will appear next to each number in the block list below.
Step 5. Touch one of the red circles
Step 6. Touch Unblock
The number in question will disappear from the list. Now, you can call and send messages to that number.