Not able to see when people read my messages
I previously just changed phone numbers and phones. I transferred all my things onto my new phone however, since then I am not able to see when people read my messages. Could this be solved in settings or how is it possible for others and my read messages to be on, but I am not able to see that they read my message?
[Re-Titled by Moderator]
iPhone 6s Plus, iOS 12