iPhone THE MISSING MANUAL - Cdn.oreilly.com

Fortunately, if this effect winds up chopping off something important—some
text on the screen, for example—restoring the original letterbox view is just
another double-tap away.
Familiar iPod Features
In certain respects, the iPhone is not an iPod. It doesn’t have a click wheel, it
doesn’t come with any games, it doesn’t display lyrics, it can’t output video to
a TV set, and it doesn’t offer disk mode (where the iPod acts as a hard drive for
transporting computer files). At least not in version 1.
oK, oK—there actually is a way to simulate iPod disk mode on the iPhone. Just
download iPhone Drive, a shareware program available from this book’s “Missing
CD” page at www.missingmanuals.com.
It does have a long list of traditional iPod features, though. You just have to
know where to find them.
Volume Limiter
It’s now established fact: Listening to a lot of loud music through earphones
can damage your hearing. Pump it today, pay for it tomorrow.
MP3 players can be sinister that way, because in noisy places like planes and
city streets, people turn up the volume much louder than they would in a
quiet place, and they don’t even realize how high they’ve cranked it. No wonder
parents worry about their kids.
That’s why Apple created the password-protected volume limiter. It lets parents
program their children’s iPods (and now iPhones) to max out at a certain
volume level that can be surpassed only with the password.
To set up the volume limiter and its password, see page 260.
Sound Check
This feature smoothes out the master volume levels of tracks from different
albums, helping to compensate for differences in their original recording
levels. It doesn’t deprive you of peaks and valleys in the music volume, of
course—it affects only the baseline level. You turn it on or off in Settings (page
259).
Music and video 85