Huawei P30 Pro User Guide - Page 32
Use knuckle to start recording, rapidly knock the screen twice with two knuckles again.
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Gestures and Operations Use knuckle to start recording: Knock the screen twice in quick succession with two knuckles to start recording. You can turn on or off based on your needs. To end the recording, gently and rapidly knock the screen twice with two knuckles again. 28
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Use knuckle to start recording
: Knock the screen twice in quick succession with two knuckles to
start recording. You can turn on or off
based on your needs. To end the recording, gently and
rapidly knock the screen twice with two knuckles again.
Gestures and Operations
28