I attempted to add GPS functionality into my app, but no data was ever returned since GPS_LocationChanged was never called. I figured I did something wrong. So I tried Erel's example from the tutorial (I did not make any modifications) and once again nothing. GPS_LocationChanged was never invoked. I did receive the ToastMessage "GPS device enabled = True" However, at the same time and while standing in the same location Maps shows my location and GPS Essentials shows a good fix with data. Using Libraries, GPS v1.2 and Core 3.8 on a Galaxy S3 running Android 4.4.2 Any ideas would be appreciated! Thanks!