Google is seemingly testing a new double-tap gesture that utilizes the back of the device. noticed this new feature when toying around with the very early developer preview of Android 11, and it seems that the feature functions like this: you double tap the back of the phone, and a predefined feature gets activated. Yes, we are talking about the physical back of the phone, and the curious bit here is that it seemingly works with cases on. Codenamed "Columbus", this new feature seems to be intended for phones only and not just any . It most certainly doesn't require ...