iPhone and iPhone 6 Plus Hardware Diagram

There are all sorts of buttons, switches, and ports on the outside of the iPhone 6 and iPhone 6 Plus. Experienced iPhone users will recognize most or all of them—though one familiar and crucial button has been moved to a new location on these models—new users may be uncertain what each does. This diagram explains what each is and what it's used for. Knowing this will help you use your iPhone 6 series phone to the fullest.

Only one phone is shown in this diagram. That's because, other than their screen size, case size, and thickness, the two phones are virtually identical and they have the same buttons and ports. I've noted the few places where they differ in the explanations below.

1. Home Button

Because it's involved in so many functions, this is probably the button pressed most often by iPhone users. The Home button has the Touch ID fingerprint scanner built into it for unlocking the phone and making purchases. It's also used to return to the home screen, access multitasking and favorites, kill apps, take screenshots, and restart the phone.

2. User-Facing Camera

This 1.2-megapixel camera is used for taking selfies and for FaceTime chats. It also records video at 720p HD resolution. While it can take photos and videos, it doesn't offer the same image quality as the back camera and lacks features like slow-motion video, time-lapse photos, and taking photos while also recording video.

3. Speaker

When users hold the iPhone up to their heads for phone calls, this is the speaker through which they hear the person they're speaking to.

4. Back Camera

This is the primary camera on the iPhone 6 series. It takes 8-megapixel photos and records video at 1080p HD. It can also be used to take time-lapse photos, burst photos, and, when recording video, slow-motion video at 120 and 240 frames/second (normal video is 30 frames/second). On the iPhone 6 Plus, this camera includes optical image stabilization, a hardware feature that delivers higher-quality photos. The 6 uses digital image stabilization, which attempts to replicate hardware stabilization via software.

5. Microphone

When recording video, this microphone is used to capture the sound that goes along with the video.

6. Camera Flash

The camera flash provides more light when taking photos and videos. Both the iPhone 6 and 6 Plus use the dual-flash introduced on the iPhone 5S, which delivers better color accuracy and photo quality.

7. Antenna

The lines across the top and bottom of the back of the phone, as well as on the edges of the phone, are the antenna used for connecting to cellular phone networks to place calls, send texts, and use wireless Internet.

8. Headphone Jack

Headphones of all kinds, including the EarPods that come with the iPhone, are plugged into this jack on the bottom of the iPhone 6 series. Some accessories, such as car FM transmitters, are also connected here.

9. Lightning

This next-generation dock connector port is used for syncing an iPhone to a computer, connecting the iPhone to some car stereo systems and speaker docks, as well as other accessories.

10. Speaker

The speaker on the bottom of the iPhone 6 series is where ringtones play when a call comes in. It's also the speaker that plays audio for games, movies, music, etc. (assuming that audio isn't being sent to headphones or an accessory like a speaker).

11. Mute Switch

Put the iPhone into silent mode using this switch. Simply push the switch down (towards the back of the phone) and ringtones and alert tones will be silenced until the switch is moved back to the "on" position.

12. Volume Up/Down

Raising and lowering the volume of the ringer, music, or other audio playback is controlled with these buttons. Volume can also be controlled via in-line remotes on headphones or from within apps (where available).

13. On/Off/Hold Button

This is the major change from the traditional iPhone hardware layout introduced in the iPhone 6 series. This button used to be on the top of the iPhone, but due to the larger size of the 6 series, which would make it difficult to reach across the screen to the button for many users, it's been moved to the side. This button is used to put the iPhone to sleep/lock the screen, to wake it up, and when taking screenshots. Frozen iPhones can also be reset using this button.