Your iPhone is equipped with a feature called Frequent Locations, which slowly tracks your location in the background to keep you updated via the Today View and the Lock screen on how long it would take you to get to your favorite places based on how often you visit them.
If you choose to enable Location Services during the initial iPhone setup, this feature will be enabled by default, so if you feel like it is a slight hindrance on your ability to remain private, you just might be right. In this tutorial, we'll show you how you can disable the feature and keep your iPhone from knowing where you are going next.