Do parents still teach their kids phone numbers now that landlines are almost obsolete?

I’m a millennial about to have my first child. As a kid, I was taught ours & my grandparents landline numbers incase I ever got lost and had to call home & somehow still remember those numbers to this day despite my grandparents being long gone & my Mum not having a house phone for at least a decade. No one I know has a landline anymore, so are parents teaching their kids their mobile number or is it just assumed that kids will have their parents number stored on their own phone?