Phones always showing Present?

Has anyone run into the issue where phones are always showing as present? And if you have, how do you fix it?

I have both an Android Phone and an iPhone connected (to ensure that it is not just a single OS), and neither are currently anywhere near the house, and yet both are showing as present.

I find that every so often it shows it has arrived and left, but one of the phones, when looking in the "recently" last left 5 days ago, and the other one has no recent activity (even though I leave daily).