Huawei Mate 9 - Manual (Page 174)

Calculator shortcut
Swipe up from the bottom of the lock screen to display lock screen features and tools, and then
touch to open the calculator.
The calculator will still rotate when auto-rotation is disabled.
Mirror
Your phone can double up as a mirror.
Zoom in or out
Change frame
Adjust brightness
Open Mirror. You can:
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Save an image: Touch the screen and select to save the image to Gallery. Your phone will
return to the mirror once the image has been saved.
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Zoom in or out: Drag the slider at the bottom of the screen.
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Adjust the brightness: Touch the plus or minus symbol at the top of the screen.
Tools
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