I see some potential flaws in this study.
First off, there are 4 cell phones in my house. Me, the wife, and the two teenagers. Are we getting penalized for not social distancing because we are all in the same location. Meanwhile, an extended family of 15 living together somewhere in the world with only one cell phone in the group probably appears to be social distancing. Big potential flaw in this study in my opinion.
Also, I walk the neighborhood for about an hour each night. Take my cell of course. Just because I'm walking by a neighbor's house does not mean I'm stopping in for a visit.