On WhatsApp, it says on the message info that the message has been read with 2 blue ticks and no time and message delivered with 2 grey checks with time. What does this mean?
My friend is abroad and I have sent him messages. There is one grey tick next to the messages I recently sent, but when I swipe left it says read with 2 blue ticks but no time of read. How can I know if he has seen my messages?