Shiri Melumad of the Wharton School was interviewed about her research into how people communicate with smartphones, as opposed to personal computers. “Consumers tend to convey feelings or thoughts that are more private or intimate on their smartphones, which is captured by the use of ‘I’ or ‘we’ and mentioning family and friends,” she said.
https://www.wsj.com/articles/why-people-are-more-honest-when-writing-on-their-smartphones-11591999279 The Wall Street Journal