Most iPhones have a largely unknown feature called Back Tap. If you turn on this special ability, Back Tap will let you trigger an app or function when you tap the back of your iPhone. Back Tap can open Settings, or the Facebook app, or your Camera, whatever you yoke it to.
It’s like you have an invisible button back there that can do anything! Back Tap can be setup on any iPhone 8 and up that is running iOS 14 or newer. For detailed steps, check out these articles for how to set yours up.
First-time users of Back Tap are recommended to keep an eye on it for the first week or so, in case of accidental triggers. If you notice any misfires with Back Tap, you can modify the settings (Double or Triple Tap) or turn it off.
This feature is called Quick Tap on Android phones, but is not widely available yet. So far, it’s showing up only on select Google Pixel phones. Other manufacturers are slow to incorporate this into their phones, but you can always check your phone for this feature under: Settings -> System -> Gestures. If your phone supports Quick Tap, it will be at the top of the Gestures options list.
A warning: internet searches for “Android Quick Tap” will quickly reveal a workaround app called Tap Tap. BlueScreen Computer does not recommend this app. It does not come from the Google Play Store. It has not been vetted by Google. Installing Tap Tap requires you to hamstring & bypass your phone’s security. Please don’t risk it! If your Android phone doesn’t offer Quick Tap, you’re better off waiting to get it on a future phone.