Phone usage intensity in Advan data

Hi,

I'm trying to understand the visits in the Advan weekly pattern. It appears that the visits only collect the first ping each device sends out on that day, but sometimes the sum of Visits per Hour exceeds the Total Visitor and Total Visits. Can the same device be counted twice within the same day? And if that is not visible in the visit by hour variable, are there any other variables that allow us to see that?

For context, I'm considering whether the data allows us to see the intensity of phone use at each POI or not.

Thank you,

Nat