A totally new camera takes the scene.
12 Mpx - Camera
Optical Image Stabilization
7 Mpx Camera FaceTime HD
Flash True Tone with four LEDs.

Two cameras for a single photograph,
12 Mpx Wide angle and remote.
Optical Zoom x2.
Digital Zoom up to x10.

Retina HD screen.
The brightest and most colorful iPhone screen to date.
Wide range
25% brighter
3D Touch.

Chip A10 Fusion:
The most powerful chip used on a smartphone.
x 2 faster than on iPhone 6
The greatest autonomy on an iPhone

Sound:
iPhone. Light in stereo.
New stereo system
x 2 more acoustic power than on iPhone 6s
EarPods with Lightning connector
New AirPods

Wi-Fi and mobile networks:
Fastest 4G LTE connections and the best roaming around the world.
450 Mb/s Connection 4G LTE triple fast than on iPhone 6
LTE Up to 25 bands.
Answer WhatsApp calls and other apps