August 2007
Beginner
304 pages
7h 49m
English
Content preview from iPhone: The Missing Manual
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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.
EDGE Network. When this logo appears, your iPhone can get onto the Internet via AT&T's very handy, but very slow, EDGE cellular network (A Tale of Two Networks). In general, if you have a cell signal, you also have an EDGE signal.
Airplane Mode. If you see the airplane instead of signal and Wi-Fi bars, the iPhone is in Airplane mode (Turning Off the Antennas—and Airplane Mode).
Wi-Fi Signal. When you're connected to a wireless Wi-Fi Internet hot spot (A Tale of Two Networks), this indicator appears. The more "soundwaves," the stronger the signal.The iPhone is locked—meaning that the screen and most buttons don't work, to ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.