I was playing with a Motorola G72 and noticed this feature by accident: double-tap on the back of the phone to trigger a custom action.
Here is a video showing this feature
This is not the same as double tapping the fingerprint scanner. This phone has a front-facing under-display scanner.
It’s very neat and handy, I hope other phones implement this too.
Update: See this comment for a link to an app that enables the feature on many phones.
chop chop flashlight is the very best feature of the Moto series
Honorable mention to twist twist camera
And to twist for switching between main and selfie camera.
For real. I moved over to Samsung a while back and I miss choppy choppy light light.
Should be noted it’s fairly simple to do this on any Android phone with Tasker.
Profile > Event > Sensor > Shake Left-Right >
task=torch toggleTasks > Alert > Torch > Set Toggle >
task - torch toggleI went to pixel because the last couple of moto phones were just meh, but chop chop flashlight was the greatest thing ever