My wife upgraded to a Samsung Galaxy S21 5G. We use location services for Google maps. Suddenly, whenever her phone sits and goes idle (black screen) the location services seem to be turned off. We use this a lot to help her with directions when navigating or when she gets lost. When she uses the phone, after a minute I get a location update.
She can see my location almost real time (Pixel 3a). I've dug into every location setting possible but can't figure it out.