I sent a message to an iPhone. It took a little bit of time to get the delivery confirmation, probably because the person works in the remote area. However, the person says he could not see the message until the next night and had to reset Viber to see it? Can this be true?
The answer is no, it's not true. From the moment you send the message, it will be delivered to the other user. When it says delivered, it means the phone reached its destination. Even if the user didn't saw the message, it will still say Delivered.