I've got an S9.
About 3 months ago, my Waze app quit being able to determine my location for navigation. I notice that it no longer works in Runtastic or even Google maps. I've got the settings on "high accuracy" - any suggestions for what is going on? This really is a pain in the backside.
Make sure you have location permission on for each app
Settings>apps>(apps name)>permissions> make sure location is turned on
waze, google maps, google play services.
Clear data for
Waze, Google maps, and google play services
Clear data to system location apps:
settings>apps>(on top right click 3 dots) show system apps.
Samsung location sdk
Restart your device. Hope this helps resolve your location issue