Heck! I wouldn’t even have my dirt-basic cell phone if I weren’t on 24 emergency call.
Being on-call for my job is the only reason I have a cell phone. If/when it comes down to it, I plan to ditch my personal cell and go back to landline. In a true emergency, cabled-phones will have a better chance than cell, and being that I’m a HAM operator, I’ve always got my trusty HT or base station for when the SHTF.