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iPhone THE MISSING MANUAL - Cdn.oreilly.com

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Choose a Network. Here, you’ll find a list of all nearby Wi-Fi networks<br />

that the <strong>iPhone</strong> can “see,” <strong>com</strong>plete with signal-strength indicator and<br />

a padlock icon if a password is required. An Other item lets you access<br />

Wi-Fi networks that are invisible and secret unless you know their names.<br />

See Chapter 6 for details on using Wi-Fi with the <strong>iPhone</strong>.<br />

Ask to Join Networks. If this option is On, then whenever you attempt<br />

to get online (to check email or the Web, for example), the <strong>iPhone</strong> sniffs<br />

around to find a Wi-Fi network. If it finds one you haven’t used before, the<br />

<strong>iPhone</strong> invites you, with a small dialog box, to hop onto it.<br />

So why would you ever want to turn this feature off? To avoid getting<br />

bombarded with invitations to join Wi-Fi networks, which can happen in<br />

heavily populated areas, and to save battery power.<br />

Carrier<br />

If you see this panel at all, then you’re doubly lucky. First, you’re enjoying a trip<br />

overseas; second, you have a choice of cellphone carriers who have roaming<br />

agreements with AT&T. Tap your favorite, and prepare to pay some serious<br />

roaming fees.<br />

Settings 243

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