Huawei P9 User Manual page 85

This feature is not available during music playback. Not all camera modes support this feature.
1
Open Camera and then swipe left on the screen to access the camera settings. Touch Ultra
snapshot > Open camera and take quick snapshot.
2
When the screen is off, point the camera at the desired object, and then press the volume down
button twice in quick succession to take a photo. The camera will automatically take a photo
and display the capture time.
Disabling Ultra Snapshot: On the camera settings screen, touch Ultra snapshot
Due to the rapid capture time, image quality may decrease for night-time or close-up shots.
Choose a location with ample light and shoot from a suitable distance.
Press the volume down button
twice in quick succession
Camera and Gallery
> Off.
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