Samsung Galaxy S9 text delivery confirmation settings

[Android Central Question]

Why for a few contacts do I get delivery and read notifications but not others on the galaxy S9?

 

[Hermes Hidayat]

Why for a few contacts do I get delivery and read notifications but not others on the galaxy S9?

Read notifications in sms?

 

[lucianus_luciferus]

What app?
What carrier?

 

[Rukbat]

It depends on the app you're using, the app they're using, your carrier and their carrier. Eventually it will all come together, but right now all that's guaranteed is that Android Messages will receive and send SMS and MMS.