Of course, Apple would know your location most of the time anyway, whether or not this file exists. You send the ID's of cell towers and wifi points to Apple, w

Of course, Apple would know your location most of the time anyway, whether or not this file exists. You send the ID's of cell towers and wifi points to Apple, which returns you the location of those points. Apple could always have been storing your location based on that interaction alone. In fact, keeping a database like this could actually give Apple LESS information about your location, as you don't have to request a new location if you already have the info of all the near ID's in your database. I'm not sure if this actually happens though. The same, of course, can be said for any Android device and Google's A-GPS database; you have no guarantees that Google isn't logging your location whenever you're using location services.