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iPhone: The Missing Manual, 3rd Edition
book

iPhone: The Missing Manual, 3rd Edition

by David Pogue
July 2009
Beginner
416 pages
12h 12m
English
O'Reilly Media, Inc.
Content preview from iPhone: The Missing Manual, 3rd Edition

Headphone Jack

The tour continues with the top left corner of the iPhone. Here's where you plug in the white earbuds that came with it.

This little hole is more than an ordinary 3.5-millimeter audio jack, however. It contains a secret fourth pin that conducts sound into the phone from the microphone on the earbuds' cord. Now you, too, can be one of those executives who walk down the street barking orders to nobody in particular. The iPhone can stay in your pocket as you walk or drive. You hear the other person through your earbuds, and the mike on the cord picks up your voice.

Tip

On the iPhone 3G and 3GS, you can replace the white Apple earbuds with any standard headphones—welcome news to audiophiles. But on the original iPhone, the molding around the iPhone's audio jack prevents most miniplugs from going all the way in. You may be able to get your headphones to fit by trimming the plastic collar with a razor blade—or you can spend $10 for a headphone adapter (from Belkin.com, among others) to get around this problem.

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Publisher Resources

ISBN: 9780596806491Errata Page