Previously, you could disable Group Messaging. But I don't see this option in iOS 12. Does anyone know how to turn off Group MMS messaging without disabling MMS entirely?
"Group MMS" is described clearly on this page.
The reason I want to disable Group MMS is because I have a couple of friends that I send text messages (SMS) to who have very old Android phones and often have no data. For these phones they receive a message saying "could not load message because no data". Normal SMS seems fine, but any time I send a message to multiple recipients, it seems to want to send as a "Group MMS" which does not work for them. This means any time I want to send an SMS to a bunch of different people, I need to individually send to each person rather than sending all at once, which is a big pain when there are 10+ people.