Titu911
Active Level 3
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Double tap the back of the phone to turn on the flash light
Triple tap the back to take a screen shot

9 Comments
Abhishek13892
Expert Level 1
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In Android 11 we would get thats, as per current tech news
__AnOnYmOuS__
Expert Level 5
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This is will be considered if your phone hardware supports it.

Simply A Software update cannot help you have this features in your phone.
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Most devices do support it. It works in my M31s using an open source software called Tap Tap. It uses some sensors which are present in 99% of devices.
__AnOnYmOuS__
Expert Level 5
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That's pretty cool 😃
I didn't knew about it ..
Ehsank
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what you suggest will make a mess with mobile , and for S S Enable assistant menu, this is best way ,by this option you can also perform other important task such as screen off, navigation, sound, screen rotation, power off menu, notification panel and also specific app option available

To enable assistant menu just go to

settings>>accessibility >>interaction and dexterity>>assistant menu>>enable and also click on it and enable>> assistant plus menu

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kumar6789
Active Level 7
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As per current reports Android 12 will support it.