Do you still know anyone (an adult) who doesn’t own a cell phone?

My parents have one cell phone between them. Usually it isn't a problem. Mom is usually in the house and close to the house phone. On a good day dad is out and about and has the cell phone with him.
There was that one time mom had a dr's appointment and carried the phone with her and my dad went over to the farm to work without a phone. It wouldn't have mattered anyway since he could not have heard it over the tractor but there was about an hour that mom was looking for him and couldn't find him.