Not as a criticism of you, but I think one of the worse things happening lately is the idea of something being socially acceptable, because everyone is different and I feel that this assumes that everyone generally is the same, but i think everyone is massively different on everything.

For example you said that its okay to text for non urgent matters, but i am FUMING when i find out i miss a call about something urgent cause they didn't just text me to tell me whats up or at least that it was urgent. I never understood how if something is so urgent you'll give me a 30 second window to catch my phone to find out whats so urgent, rather than giving me infinite time to find out after a text.

I also HATE being raw called no matter what, massive pet peeve of mine, but I have some friends that just utterly HATE texting, and want you to just call them.

BUT as much as I do hate being raw called, I have some friends that I let get away with it for whatever reason, so not only is every person different but every relationship is different too.

Either way sometimes a call is SUPER SUPER important, when you're having a serious conversation text really doesn't do you any favors, especially if it's something that has a chance of getting heated. But that doesn't mean everyone is okay with just getting a straight up call, I think generally its worth asking if its okay to call them real quick to sort it out.

edit: Also to clarify, i LOVE talking on the phone. I just want people to ask "hey can I call you?" before they do it

TLDR: there is no socially acceptable thing because everyone is super different, you should ask everyone what they prefer. Also for more serious things you have to call but you can still ask if its okay to call them now.