https://www.klaviyo.com/blog/difference-between-rcs-vs-sms-vs-mms
For anyone who is completely using degoogled android; unless your using microG, stock android messaging apps don’t support RCS. That is Apple (joined the bandwagon with IOS 18) and Googles controlled space. Everyone knows that google is anti privacy, hence, not using messages with RCS, unless google unleashes the reign of RCS, but unfortunately I don’t know if that is ever going to happen.
You’re not really missing much except for high resolution pictures/ gifs, read receipts to confirm when messages are sent and how certain messages are sent with better resolution. Plus, also having the ability to send longer messages, along with messages sent over Wi-Fi and cellular.
The problem I was having was I was completely using a stock SMS/MMS android app, but my immediate family (all with apple devices except for one android user) all are using their default messaging apps with RCS. Texting is big with us and I can’t receive any messages, so in order for communication to work, I’m having them download Delta Chat, we make anonymous profiles and talk in a private group chat. This is all happening all because to them I’m going, “off the grid” and They don’t want to turn RCS off, even though that would be easier😒
So, I was able to make a compromise with Delta Chat.