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iPhone THE MISSING MANUAL - Cdn.oreilly.com

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250<br />

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•<br />

in California, how should that event appear on your calendar? Should it<br />

appear as 3:30 p.m. (that is, your local time)? Or should it remain stuck at<br />

6:30 (East Coast time)?<br />

It’s not an idle question, because it also affects the <strong>iPhone</strong>’s reminders<br />

and alarms.<br />

Out of the box, Time Zone Support is turned on. That is, the <strong>iPhone</strong><br />

automatically translates all your appointments into the local time. If you<br />

scheduled a reminder to record some TV movie at 8:00 p.m. New York<br />

time, and you’re in California, the reminder will pop up at 5:00 p.m. local<br />

time.<br />

This presumes, of course, that the <strong>iPhone</strong> knows where you are. even though the<br />

<strong>iPhone</strong> always knows what the local time is when you travel across time zones, it<br />

can’t actually determine which time zone you’re in. You have to tell it each time<br />

you change time zones—by tapping Time Zone here on this screen.<br />

If you turn Time Zone Support off, then everything stays on the calendar<br />

just the way you entered it.<br />

Auto-Lock. As you may have noticed, the <strong>iPhone</strong> locks itself every time<br />

you put it to sleep (by tapping the top-edge Sleep/Wake button). It also<br />

locks after a few minutes of inactivity on your part. In locked mode, the<br />

<strong>iPhone</strong> ignores screen taps and button presses.<br />

All cellphones (and iPods) offer locked mode. On this machine, however,<br />

locking is especially important because the screen is so big. Reaching<br />

into your pocket for a toothpick or ticket stub could theoretically fire<br />

up some <strong>iPhone</strong> program or even dial a call from the confines of your<br />

pocket.<br />

On the Auto-Lock screen, you can change the interval of inactivity before<br />

the auto-lock occurs (1 minute, 2 minutes, and so on), or you can tap<br />

Never. In that case, the <strong>iPhone</strong> locks only when you send it to sleep—not<br />

automatically after an inactive period.<br />

Passcode Lock. This feature works exactly as it does on iPods. It lets you<br />

make up a four-digit password that you have to enter whenever you<br />

wake up the <strong>iPhone</strong>. If you don’t know the password, you can’t use the<br />

<strong>iPhone</strong>. It’s designed to keep your stuff private from other people in the<br />

Chapter 13

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