"Usage" meaning what exactly, though? My parents both have phones, which they keep turned off nearly all the time. They have them for emergencies in case their car breaks down or to make calls when traveling. My mom's is actually some sort of smartphone - never really looked it so I'm not sure what, but I'm sure it was the cheapest she could get when she had to replace the old one because 2G was getting shut off by her carrier. She buys a bucket of 2000 minutes that expire in a year and uses about 50. They use their landline normally, with the same number they had when I was a little kid.