Unblocking someone on Messenger for iPhone is a quick process, whether you want to resume a conversation or simply manage your privacy settings. Since Messenger and Facebook are interconnected, it’s important to know if you've blocked them on just the messaging app or on the entire Facebook platform. Quick Steps to Unblock on Messenger (iPhone)
The person you unblock will receive a notification that they have been unblocked. They will only realize it if they search for your profile and find they can see it again, or if they try to message you and the message goes through. how to unblock on messenger iphone