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iPhone: The Missing Manual, 2nd Edition
book

iPhone: The Missing Manual, 2nd Edition

by David Pogue
August 2008
Beginner to intermediate
376 pages
9h 33m
English
O'Reilly Media, Inc.
Content preview from iPhone: The Missing Manual, 2nd Edition

Screen Icons

Here's a roundup of the icons that you may see in the status bar at the top of the iPhone screen, from left to right:

  • Cell Signal. As on any cellphone, the number of bars indicates the strength of your cell signal, and thus the quality of your call audio and likelihood of losing the connection. If there are zero bars, the dreaded words "No service" appear here.

  • orNetwork Type. The means that your iPhone is connected to the Internet via AT&T's very slow EDGE cellular network (A Tale of Three Networks). In general, if you have a cell signal, you also have an EDGE signal. If you see the logo instead, get psyched; not only are you using an iPhone 3G, but you're in one of the cities where AT&T has installed a 3G network (much, much faster Internet).

    image with no caption
  • Airplane Mode. If you see the airplane ...

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Publisher Resources

ISBN: 9780596521677Errata