Google Maps for mobile provides detailed mapping information over a phone's data connection. Android platforms have access to all of Google Maps' features because Google Maps and the Android platform are both developed by Google. Google Maps, which is the iPhone's default mapping program, also provides a number of useful features on the iPhone, but the iPhone lacks the complete Google Maps feature set that Android-powered phones enjoy.
Common Features
Google Maps draws on the same map source for both platforms. It also uses the same data repository for place names and business information. Both versions are capable of using an internal GPS unit or network information to display your current location on a map. You can overlay real-time traffic data on the map in either program to avoid traffic jams. In addition to displaying road maps, both programs can display satellite imagery and Street View images. Both versions can also give you driving, public transit or walking directions from one location to another.
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App Store Features
You can enhance the functionality of Google Maps on an iPhone by downloading Google Places and Google Latitude from the App Store. Google Places allows you to search for or browse restaurants, bars, ATMs, gas stations, hotels and other places near your current location. Google Latitude automatically shares your location with approved contacts and allows you to view your contacts locations - and even get directions to them. Both of these features are automatically included on Android phones.
Android-Only Features
The Android version of Google Maps' most notable feature is real-time turn-by-turn navigation with voice. Google Maps temporarily stores route data on Android smartphones while navigating so that you can continue to navigate or return to your course even if you lose your phone's data connection during a drive. On Android you can search for locations or begin navigation using voice commands. Android also provides additional layers including 3D imagery and a terrain layer. On Android you can save and load maps or locations. You can load the same maps and locations in Google Maps on your computer if you are logged in with your Google account. Finally, Google Maps on Android can also provide biking directions in addition to public transit, driving or walking directions.
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Interface Differences
Each platform's version of Google Maps is styled to match the platform's interface. On Android, Google Maps' navigation features link into the phone's notifications bar to provide updates on your route even when the phone is not in the foreground. The iPhone 4's retina display provides one of the highest resolution ways to view Google Maps on a portable device.
