How to Get GPS Navigation on an iPhone
The iPhone 3G, iPhone 3GS and iPhone 4 all feature a GPS receiver. Signals from GPS satellites are used in conjunction with cell towers to pinpoint the phone's location, and programs like the built-in Maps application can use that data to provide directions to and from the phone's current location. Before you can use your iPhone's GPS to navigate to a specific place, you must first ensure that location services are enabled for the Maps application.
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Instructions
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Enabling Location Services
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Tap the "Settings" icon to open your iPhone's Settings menu.
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Select "General."
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Open the "Location Services" menu.
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Turn location services on for the Maps application.
Using GPS Navigation
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Open the Maps application on your iPhone.
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Tap "Search" at the bottom of the screen.
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Enter the location you would like to navigate to.
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Tap the pin that corresponds to your desired destination.
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Tap "Directions to Here."
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