iPhone For Dummies. Bob LeVitus

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       Microphones: The built-in microphones let callers hear your voice when you’re not using a headset. The iPhone sports three or more microphones — the main ones are on the bottom — which work together to suppress unwanted and distracting background sounds on phone calls using dual-mic noise suppression and beam-forming technology.FIGURE 1-2: On the bottom of your iPhone (some models differ slightly).

       Lightning connector: The Lightning connector has several purposes:You can use it to recharge your iPhone’s battery. Simply connect one end of the included Lightning connector-to-USB cable to the iPhone and the other end to the USB power adapter, a USB port on your computer, or a port on a powered USB hub.You can use the port to synchronize. Connect one end of the cable to the port on your iPhone and the other end to a USB port on your Mac or PC.You can use the Lightning port to connect your iPhone to other devices, such as a camera or television using an adapter such as the Camera Connection Kit or one of Apple’s A/V adapter cables.You use the Lightning port to connect EarPods (or your favorite headset, which may require a 3.5 mm headphone jack adapter), so you can listen to audio or talk on the phone without holding a slab of glass and metal in front of your face.Little-known fact: The EarPods with Lightning connector that used to come with iPhones will work with any iOS device with a Lightning connector.

       Stereo speakers: The speakers are used by the iPhone’s built-in speakerphone and for playing audio — music or video soundtracks — when no headset is connected. They also play the ringtone you hear when you receive a call. All current iPhones have stereo speakers.

       Camera: The camera on the front of the iPhone is tuned for FaceTime, so it has just the right field of view and focal length to focus on your face at arm’s length, which presents you in the best possible light.

       Receiver/front microphone: The receiver (speaker) and front mic that the iPhone uses for telephone calls. The receiver naturally sits close to your ear whenever you hold your iPhone in the “talking on the phone” position; the mic is used for noise-cancelling and FaceTime calls. You should be the only one who hears sound coming from the receiver. If you have the volume set above about 50 percent and you’re in a location with little or no background noise, someone standing nearby may be able to hear the sound, too. So be careful. If you require privacy during phone calls, use a compatible Apple or third-party headset — wired or wireless — as discussed in Chapter 14.

       Status bar: The status bar displays important information, as you discover in a page or two.

       Touchscreen: You find out how to use the iPhone’s gorgeous high-resolution color touchscreen in Chapter 2. All we have to say at this time is try not to drool all over it.

       Home button and Touch ID sensor (Touch ID models): No matter what you’re doing, you can press the Home button at any time to display the Home screen, which is the screen shown in Figure 1-3. The iPhone’s Touch ID sensor uses your fingerprint to unlock the phone (see Chapter 2).

       App icons: Each icon on the Home screen launches an included iPhone app or one you’ve acquired from the App Store.