The iPhone 4 came up with the better version of GPS navigator. There are additional features that the iPhone 4 has incorporated which are:
- Assisted GPS
- Cellular
- Wi-Fi
- Digital compass
There are all location services provided by Apple and implemented in the iPhone 4 Smartphone.
The iPhone 4 provides more value via its location based apps. I would say this is where the most value comes from using the GPS capable iPhone 4. For instance, if you need a double shot of espresso, all you have to do is to type coffee into your location aware map and all nearby coffee shops will pop-up on your screen.
The iPhone 4 has another GPS app that can be very useful while driving which is real time traffic information.
Finally, new feature called "Compass" will tell you what is your coordinates relative to your position. App will show your position while you are rotating with your iPhone 4 GPS enabled Smartphone.