Holding a cellphone is step 1; step 2 is having a tool that can facilitate frictionless communication to one or more people -- easy and cheap enough for pretty

Holding a cellphone is step 1; step 2 is having a tool that can facilitate frictionless communication to one or more people -- easy and cheap enough for pretty much any demographic to grasp. Contacting someone from what was essentially a portable landline is surely very different from using WhatsApp (or any chat application) on a modern smartphone?