I have discovered battery drain and it is caused by GPS but I don't understand how is that possible when my location is turned off and location permission is denied for every app installed and also any app I use don't need gps. I don't have any unfamous or pirated apps installed, and didn't get any new apps since 5 days, and problem started today. So is there any way to see which app is using gps since here is just blank name..?