Huawei Mate 8 User Manual page 204

For example, if you want to open Settings, two steps are required: Touch the Settings
icon once using one finger, and then touch twice on any part of the screen.
Move an item: Touch the item you want to move and then touch twice anywhere on the
screen. Keep your finger on the screen and then move the item to the desired location.
Configuring the TalkBack settings
You can customize the TalkBack settings to suit your individual needs.
1
Open Settings.
2
Touch Advanced settings
3
You can adjust the feedback volume, audible feedback settings, control gestures, and
more.
> Accessibility > TalkBack
Accessibility features
> .
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