I would love to know the age groups of this study, plus the percentages of each age group whether they have a "smartphone" or "dumbphone". But this study I think is all moot because inconsiderate people, will always be inconsiderate people. Twenty Five by the way.
I am still on the "dumbphone" bandwagon, and am extremely considerate about being on the phone in public. Plus, everyone doesn't need to know my phone conversation, even if it's just checking in with a friend or a work call.
Something else that comes to mind is Facebook. Some people are so used to blabbing every little thought that pops in their head online, that it would only be natural they would be the same way on their phones. I am also a person who has a FB, but am rarely on.
Just my thoughts 😉