Just like every other operating system with new features in updated version ,the ISO 9 comes with a useful feature which is known as "facedown detection"
This feature allow the IPhone to save more battery life.
Before the release of this update, the iPhone screen always come up whenever there is a notification, whether the screen is face up or turn down and as we all know, screen takes a lot of battery juice,which makes it consume more battery life.
How the new feature works.
When you get a notification on your iPhone, the screen turns on itself, you can choose to read it or glance at it without touching it.
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However, if you don't want to read your iPhone notifications, just turn the face down.
You will still get the vibration and sound but the screen won't up come up.
This feature is for selected iphone's device ,the "facedown detection" doesn't work on iPhone 4s, iPhone 5, iPhone 5c and other older iPhone device which includes the iPad and iPod touch but works on iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, and iPhone 6s Plus, iPhone SE, iPhone 7, and iPhone 7 Plus.
The facedown detection uses the motion coprocessor to get it running ,but in other to disable this feature on your iPhone, head to :
1. Settings
2. Privacy
3. Motion and Fitness and disable “Fitness Tracking” feature.
Doing this will make the feature stop working and the iPhone screen display will turn even when the phone is turn down.
The feature is made along side the Low Power Mode in ISO 9 to enable iPhone users save battery power, and it can only work if you know this tip and decide to turn your iPhone face down.
