Thin blue circle around contact photo in find my
When a friend has a thin blue circle around the contact photo in find my, does that mean they are active on their phone?
i know the bigger circle is just a radius area of where they might be. But sometimes the contact pic will have a thin blue line around it, other times it doesn’t.
I’ve come to the assumption that it means that the other person is actively using their phone but I cannot find proof.
can someone confirm/deny?