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
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Step 1. Open the iPhone Settings menu
It's a gray gear icon on your device's home screen.
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Step 2. Swipe the screen and touch Phone
This option is at the bottom half of the page “ Settings ”.
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Step 3. Touch Call Blocking & Identification
This option is under the “ Calls ”.
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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.
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Step 5. Touch one of the red circles
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Step 6. Touch Unblock
The number in question will disappear from the list. Now, you can call and send messages to that number.