I am trying to figure out if our son was using Whatsapp at a particular time. I know there are times when he is using it and it does show under his My Activity and there are times he is using it and it doesnt show under his My Activity. Its shows he last saw a text message on 11/7 at 6:21 pm and his My Activity shows he used Whatsapp Mesanger on 11/7 at 6:45PM. Does that mean he sent a message at 6:45PM or something else?