This new Find My Device Network....

What percentage of Android phones are actually running it? I get that it's brand new and over time more and more phones will report the location of trackers, but are there any metrics on current "market saturation" (for lack of a better word)?

I just got my Pebblebee clips yesterday that I pre-ordered a few months ago. I wanted to test them out so I sent one in my kid's backpack to daycare today (which is a legit use case I had in mind when buying these, particularly when we leave him with a babysitter).

When I try to check on the location, it says "last seen at 7:45" which is when I dropped him off, implying that my phone was the last to ping the tracker. So that means none of the teachers' phones, nor any of the other parents' phones have pinged the tracker. It's not a big daycare but he's one of the first to arrive. There should have been at least 2 dozen other phones near his backpack since then. This brings me back to my question about how many phones would you expect to report the location of a tracker.