If you unblock a contact in WhatsApp, will their messages arrive - briefly?
If you unblock a contact in WhatsApp, messages from that contact will not arrive immediately. Unblocking does not automatically deliver any pending messages; they will only be received if the contact sends new ones after you have unblocked them.
If you unblock a contact in WhatsApp, will their messages arrive - in detail?
If you unblock a contact in WhatsApp, the messages they sent while they were blocked will not be delivered to your phone. This is because WhatsApp does not store undelivered messages for blocked contacts. Once you unblock the contact, new messages they send after that point will arrive as usual.
When you block a contact on WhatsApp, their messages are not stored or queued by the app. Instead, they remain in limbo, so to speak, until the block is lifted. After you unblock the contact, you will only receive new messages sent after the unblocking process. Any messages sent during the time the contact was blocked will not be delivered retroactively.
It's also important to note that if a blocked contact tries to call you on WhatsApp while they are still blocked, the call will not go through and no notification will be received by you. After unblocking them, they can attempt to call again, and this time the call should connect normally.
In summary, unblocking a contact in WhatsApp allows new messages from that contact to arrive, but it does not deliver any messages sent while the contact was blocked.