I recorded a full conversation in my kitchen and I pulled out the parts during which I was texting. I transcribed the whole thing and typed up the texts (typos and all) alongside the parts of real conversation that surrounded them. It's all really silly. I don't know whether I want to use images or just text. I also have no idea how I really want to handle the texting part of it vs. the conversation going on simultaneously.
Below is a rough idea of how I would lay out each snippet of conversation - as a spread in a book.