I connect my galaxy S8 with my trucks radio and use either google maps or Waze for navigation. This has been working for 6 months. But yesterday it started loosing connection to the GPS. What I noticed is that when the phone turns off the screen (its still running the map on my radio's screen), it looses connection with the GPS. As soon as I turn on the screen, it reconnects to the GPS.
What would have happened to cause this? Is there a setting to keep the GPS active when running GOOGLE maps (or WAZE) in the background but the screen is off?