Honestly the only times I use the phone portion of my cell phone is to validate my WhatsApp account, 2FA for various websites that don't support FIDO, and talking to recruiters, and texting people who I don't have a better method of contacting them (fb, WhatsApp, email etc)

I could probably dump my phone number except for WhatsApp. That's basically replaced my phone for all friends and family. I haven't turned on my ringer in months.