You should try beeper, it has a waitlist tho
_meta_data
RCS go brrr
laughs in beeper (iMessage on Android, RCS on iPhone, and other chat apps like WhatsApp and signal over Matrix bridges)
AFAICT it used to be called Calckey
I use Instagram for talking to friends (and others my age from my country), and mastodon for online friends, and more tech-savvy people.
Based OS :)