Swipe left on the number or tap and the minus icon to remove them from the list. On Android
On iPhone , you can manage your blocked list directly through system settings. This action applies across Phone, FaceTime, and Messages.
Before we dive into the process of unblocking someone, let's quickly discuss why you might block someone on your contacts list in the first place. There are several reasons why you might block someone, including:
If you unblock a contact on your phone but they still have you blocked on their device, nothing changes. Unblocking is unilateral. You may send a message that appears sent (with one checkmark on WhatsApp, for example), but it will never be delivered until they unblock you on their end.
You can have a contact saved in your phone book but still be blocked on WhatsApp. Conversely, you can unblock a number on your phone but remain blocked within an app. The process is not universal; it is platform-specific.
To unblock someone from your contacts is to admit that digital walls are not permanent fixtures of a house, but temporary partitions in a room. The mechanics are simple: navigate to Settings > Phone/Blocked numbers > tap Unblock. But the true skill lies in knowing when to turn that key.