How can I tell if someone has read my message after it's delivered?

[AC Question]

One of my contacts, my message that I've sent shows that it has been read by the person. Also it shows that the other person is typing. None of my other contacts have shown this. I would like it if I could have all of my contacts do the same thing.

 

[Ry]

One of my contacts, my message that I've sent shows that it has been read by the person. Also it shows that the other person is typing. None of my other contacts have shown this. I would like it if I could have all of my contacts do the same thing.

What messaging app?

What phones?

Which carrier?