This Michael Rosenwald article is entitled “Smartphones get more sophisticated, but their owners do not,” here is one excerpt:
Some of the most highly touted smartphone innovations are barely used at all. A 2012 Harris Interactive poll showed that just 5 percent of Americans used their smartphones to show codes for movie admission or to show an airline boarding pass. Whether that’s because of a lack of interest or lack of know-how (or both) is not entirely clear, but experts who study smartphone use, as well as tech-support professionals who work with the confused, say they see smartphone obliviousness at all ages and for all kinds of reasons.
The article is interesting throughout. By the way, while I am not sure of the exact definition of an “app,” in general I do not use them.