Double Tap To Wake/Sleep On Any Android Device [No Root]

Hey whats up people so today in this video i am going to show you guys to how to get the double tap to turn your screen on/off on any android device.So this method is completely free and it doesnt need root!\r
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App Link :-\r
1) Knock On :- \r
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Note:- This application mostly work with oled screen devices..you can try if your device is not oled it may work!\r
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This video belong to Sarthak harshe!\r
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Please watch: Resurrection Remix Android 8.1 Oreo / Oneplus 5!\r
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