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iPhone: The Missing Manual by David Pogue

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General

The General page offers a motley assortment of miscellaneous settings, governing the behavior of the virtual keyboard, the Bluetooth transmitter, the iPhone's little-known password-protection feature, and more.

  • About. Tapping this item opens a page for the statistics nut. Here you can find out how many songs, videos, and photos your iPhone holds; how much storage your iPhone has, and how much of it you've used; and super-techie details like the iPhone's software and firmware versions, serial number, model, Wi-Fi and Bluetooth addresses, and so on. And when you're really bored, you can even tap Legal to open up some light reading, in the form of a 50-screen-tall list of copyright notices and disclaimers.

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  • Date & Time. At the top of this screen, you'll see an option to turn on "24-hour time," also known as military time, in which you see "1700" instead of "5:00 p.m." (You'll see this change everywhere times appear, including at the top edge of the screen.)

    "Set Automatically" refers to the iPhone's built-in clock. If this item is turned on, then the iPhone finds out what time it is from an atomic clock out on the Internet. If not, then you have to set the clock yourself. (Turning this option off makes two more rows of controls appear automatically: one for your time zone and a "number ...

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