With no headphones plugged in, this is where you place your ear to listen to incoming calls. Depending on your region, the iPhone 5s and 5c may use wideband audio during telephone calls, which increases the vocal frequencies and provides better-sounding conversations.
Both the iPhone 5c and the 5s sport a 4-inch—diagonal Multi-Touch display; the device's touch sensors are integrated directly into the display, reducing sunlight glare and keeping the iPhone's figure slim. Its 1136-by-640-pixel Retina display packs 326 pixels per inch into the space allotted. The display is made from optical-quality glass, which makes it highly scratch resistant. It also has an oil-resistant oleophobic coating that makes it easy to wipe off smudges.
Home button (Touch ID sensor on 5s)
The only physical button on the face of the iPhone, the Home button provides a variety of shortcuts for accessing apps and iOS features. On the iPhone 5s, your Home button is also the location of the Touch ID sensor, which lets you use your fingerprint to unlock your device and bypass your iCloud password for purchasing apps and media.
SINGLE-PRESS A single-press of the Home button can have several results, depending on what you're using the iPhone for at the time: If the phone is in sleep mode, pressing the Home button wakes the iPhone; if you're in an app, it returns you to the home screen; if you're on a subsequent home screen page, it returns you to the first page; and if you're on the first home screen page, it brings you into the iPhone's Spotlight search mode.
SINGLE-PRESS AND HOLD If you press and hold the Home button for at least two seconds, that activates Siri.
DOUBLE-PRESS When the phone is locked or in sleep mode, a double-press of the Home button wakes your device and brings up both the iPod controls and a shortcut for the Camera app. In active use, it brings up the multitasking bar, showcasing your active apps.
Headphone Jack and Microphone
The iPhone 5c and 5s both have a standard 3.5mm audio jack on the bottom of their casings. Apple includes a set of white EarPods that allow you to listen to audio and speak on a call, but you can also use any pair of third-party headphones instead.
One of the iPhone's three microphones is located on the bottom left of the device. (The other two, which are designed to filter out noise, are located near the top, on the front and back.) Unless you're using an external microphone, you'll use this mic when making calls, recording voice memos, talking to Siri, and more.
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