So, my grandfather has a smartphone and knows enough about it to call, send messages and most importantly, use the emergency contacts. My grandmother doesn’t really understand the phone. One time I called them to say congratulations for her birthday and she didn’t know how to hang up, so apparently she just put the phone down. I could hear them talk, saying that “he’s become a good person, always remembers us” and the fact that I wasn’t meant to hear that made it extremely meaningful to me.