Updating built in gps systems
Smartphone Navigation Systems Pros Price: Factory-navigation skeptics argue that smartphones are an alternative to an expensive factory system, noting that phones already have a map application, and that's all you really need.
If you’re planning to buy a new vehicle, think about the down-the-road costs of map updates and ask for this info in advance.
Many drivers got their first experience with a navigation unit through popular portable devices from makers like Garmin, Tom Tom or Magellan.
These units almost always come with a “maps for life” feature that lets their owners connect online and download updates any time they want, for free.
This means that you can use such factory features as voice activation and other interface methods like control knobs or on-screen buttons.
Warranty Coverage: Since the factory navigation system is part of the vehicle, it is covered by the bumper-to-bumper warranty.