I blocked somebody on my phone then deleted the contact, I want to unblock the contact but now I can't. What do I do so I can unblock the person?

Go to Settings - Phone - Call Blocking & Identification

Then find the number

Then Edit

Touch Number and an Unblock Button appears

Hope this helps!!

That happend to me i dont know what to do

You may be able to unblock it by going to Settings > Phone > Blocked

this did not help at all. its a deleted number? if its a deleted blocked number, how can you unblock it?

Doesn't help if the number was deleted before it was blocked, just shows up as a phone number with no name.