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iPhone - FutureTG.com

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• New Voicemail, New Text Message, New Mail, Sent Mail… These On/<br />

Off switches let you silence the little sounds that the <strong>iPhone</strong> plays to celebrate<br />

various events: the arrival of new voicemail, text messages, or mail;<br />

the successful sending of an outgoing email message; calendar events<br />

<strong>com</strong>ing due; locking the <strong>iPhone</strong> by tapping the Sleep/Wake switch on<br />

the top of the phone; and typing on the virtual keyboard. (New in the<br />

<strong>iPhone</strong> 2.0 software: You can choose which ringtone announces the<br />

arrival of new text messages.)<br />

Brightness<br />

Ordinarily, the <strong>iPhone</strong> controls its own screen brightness. An ambient-light<br />

sensor hidden behind the smoked glass at the top of the <strong>iPhone</strong>’s face samples<br />

the room brightness each time you wake the phone, and adjusts the<br />

brightness automatically: brighter in bright rooms, dimmer in darker ones.<br />

When you prefer more manual control, here’s what you can do:<br />

Brightness slider.<br />

• Drag the handle on this slider, or just tap on the slider,<br />

to control the screen brightness manually, keeping in mind that more<br />

brightness means shorter battery life.<br />

302<br />

Chapter 16

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