We had been using 2 Android cells as a presence sensor for years. Normally it was working 90% of the time. Then within the past 30 days that all stopped. 1 cell would have to be manually updated by opening the app the other would detect when we left, but not when we arrived. ST support was no help. Same old remove it and re-add the phones back in.
Moved over to the Life360 app and the past 2 weeks have been perfect. It does seem to hit the battery harder. I’m guessing maybe a 10% decrease on battery life on our cells. YMMV.