Huawei P20 User Manual page 25
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Also See for P20:
- Basic manual (141 pages) ,
- User manual (129 pages) ,
- Maintenance manual (67 pages)
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Gestures and Operations
Use key combination to start recording: Simultaneously press the Power button and the Volume
up button to begin recording. Select Microphone, System, or None from Sound source based on
your needs. To end the recording, simultaneously press the Power button and the Volume up
button again.
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