I'd say it's very, very situational.
My best friend and I communicate 95% via text, and one of us has something important she wants to call about, she'll often text first to see if the other is available. If not, we can then plan a time that will be good to have a phone conversation without interruption.
I work in a professional office, and to take personal calls I prefer to step outside. I keep my phone on silent and don't check it if I'm busy. My mother, for example, will text me and ask me to call when I get a chance, if she needs to talk to me. That works out really well, because I can wait until I'm at a good stopping point and not have to rush her off the phone to get back to work.
But, of course, everyone's situation is different. I rarely text my mom before calling her, because she is retired and phone calls are not an interruption. I don't text my husband before calling because he doesn't like texting.