They are not all smart phones.
Mrs. CTL and our younger grandchildren use plain old fashioned flip phones from Jitterbug…the same type our late mothers used. No Internet access. Big buttons easy to see, large displays and loud sound for easy hearing.
I only got a smartphone due to business requirements. I held off as long as possible because the courts in CT did not allow you to bring a phone with a camera into the buildings. They have since relaxed the rule as no current cell phones without cameras are marketed in the USA.