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The iPhone Pocket Guide, Fifth Edition: Ginormous knowledge, pocket-sized by Christopher Breen

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7. The Stores

You know that constant use gives you the power to drain your iPhone’s battery. In what some people might view as a turnabout-is-fair-play situation, your iPhone has the power to drain your wallet. Its means for doing so are three Apple-owned online emporiums accessible from your iPhone: the iTunes Store, the App Store, and the iBookstore. The first lets you browse, purchase, and download music, videos, podcasts, and iTunes U content over a Wi-Fi, 3G, or EDGE connection with nothing more than your iPhone and an iTunes account linked to your credit card. The App Store is where you find free and commercial add-on apps (made by Apple as well as third parties) that you can also download over Wi-Fi, 3G, or EDGE. Finally, the iBookstore—available ...

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