Dear Annie: I am the proud owner of a flip cellphone, and I probably wouldn’t have it if public telephones still existed. I use about 100 minutes a month and have sent, in my lifetime, no more than 300 text messages, most of them one or two words in response to a text sent to me. I use no data. I still use physical maps to navigate car trips. However, I use a computer at my job for most of the…