Regarding 112, I’m assuming you’d have to remove tour SIM to make it work and if you had an ESIM you’d have to know how to disable it. Might prove challenging in a decent emergency.
A bit like when you’re at home and your wired NBN goes down and your phone is on the wifi bit can’t go anywhere.
I see that they have launched an enquiry to see if 000/112 was actually affected and to what extent.