Enrolling your fingerprint
To better protect your privacy, unlocking the screen using your fingerprint is only available when the unlocking method is set to PIN or Password.
1, On the home screen, touch Settings.
2, Touch Fingerprint ID > PIN or Password, and follow the onscreen instructions to set a password.
3, Follow the onscreen instructions to enroll your fingerprint.
4, Completed.

Safe
The Safe function helps you keep your important files and privacy protected.
1, On the home screen, touch Files.Then agree the User Agreement.
2, Under Categories or Local, touch Safe.
3, Touch Enable.
4, Follow the onscreen instructions to enter passwords and answers to security questions, and then touch Done.
5, Follow the onscreen instructions and select files you want to add to the Safe.
6, Touch ADD to add the selected files to the Safe.
7, Completed.

All-focus
In all-focus mode, you can change the focus point of a photo after it has been taken.
1, On the home screen, touch Camera.Enable the GPS or not.
2, Touch All-focus to switch to All-focus mode.
3, Touch Capture to take a photo.
4, Go to Gallery, and select a photo that was taken in all-focus mode.
5, Touch All-focus mode icon to enter all-focus editing mode.
6, Touch an area of the photo to change the focus point to that location.
7, Touch Save as.
8, Completed.

Taking photos from Gallery
You can take photos directly from Gallery.
1, On the home screen, touch Gallery.
2, Touch the view switching button at the bottom of the screen to switch to the timeline album view.
3, On the timeline album screen, drag down on a blank area to launch the camera in half-screen mode.
4, Touch Capture to take a photo.
5, Drag the viewfinder further down to enter full-screen capture mode.
6, Completed.

Scanning a QR code
You can take photos directly from Gallery.
1, On the home screen, touch Camera.
2, Frame the QR code with the camera. Camera will automatically scan the QR code.
3, Touch View details to view the QR code details.
4, Completed.

For more information see here: http://consumer.huawei.com/en/mobile-phones/support/simulator/ascend-mate7.htm