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The Complete Idiot's Guide® To iPad and iPhone App Development by Troy Brant

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Device Features

So what exactly can the iPhone do anyway? How about the iPad? These devices look pretty, but what can they do under the hood? As a developer, you have access to a host of features, such as:
• Internet
• Multi-touch screen
• Accelerometer
• Address Book
• iPod Music Library
• 3D Graphics
• Location detection
• Compass
• Camera
• Video
• Bluetooth
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CRASH AND LEARN
Not every device has all of these features. For instance, the iPad does not have a camera or video capabilities. 3GS iPhones have a compass while 3G iPhones do not. You can check for the existence of these features in code, but you should be aware that the features ...

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