The primary form of text communication in Australia is sms. I do a bit of regional travel in Australia and after adopting “chat features” (RCS) in the Google sms app I started having critical messages failing to go through (without notifying me) because of poor (data) reception and it wasn’t falling back to sms.
I love the features RCS brings to messaging and would love to use it, but it’s just not reliable without an uninterrupted data connection.