I updated my iPhone 7 to iOS 10.1 and noticed that my Location Services icon at the top of the screen is always on. I force quit all apps that were in the background and the icon is still on. I went looking for the Location Services settings and found them and they all appeared to be set as I had them before. So, if no apps are running then what is using location services? This is also happening with my Wife's iPhone 6 and my son's iPhone 5 as well. There are currently no Purple Locations Services icons next to any of the apps that use location services yet the Location Services icon is lit at the top of my home screen all the time indicating that Location Services is being used. I don't recall this happening in the recent past. The Location Services icon at the top of the screen was only showing up if an app was using the services.