Huawei P9 Lite - Manual (Page 41)

Getting Started
34
Taking a screenshot
Your phone comes with a range of screenshot options. Capture the entire screen or draw
a shape on the screen to take a partial screenshot.
Using the power and volume down buttons
Press the power and volume down buttons at the same time to take a full screenshot.
Using the screenshot shortcut switch
Open the notification panel, and then touch in the Shortcuts tab to take a full
screenshot.