Turn the GPS on or off to use Bluetooth GPS Provider
Some users are confused if they should disable the internal GPS or not to make things work.
The truth it that it depends on the app you intent to use. Some apps check if the GPS is enabled in the settings. So you HAVE TO ENABLE the inernal GPS to use those apps (e.g. Google Navigation).
You don't have to worry about that because if the Bluetooth GPS Provider is active (the satellite dish with the blue bars is shown) it completely replaces the internal GPS. The internal GPS is only active if you see the sat dish with the green bars in the status bar.