I have reasons to believe that someone used the GPS in my cell phone to track me down. He told me exactly where I had made a turn one morning. I checked and the "Use GPS satellites" option in my Samsung Galaxy Prevail was turned on. I know that there are online services that make use of that feature to be able to track phones down. Is this the only thing I need to worry about assuming there's no hardware involved? Can someone track me down even with that option set to off? I know that cell phone companies can tell where you are regardless of what you do. It's the "regular" people that worry me. Thanks!