Recently, the topic of the "hidden button on the back of an iPhone" soared to the top of Weibo's trending searches, igniting lively debates among netizens. Some users revealed that a simple tap on the iPhone's rear can swiftly trigger functions like taking screenshots and initiating one-tap recording. In reaction to this buzz, Apple's official customer service team set the record straight, stating that there isn't a physical button per se. Instead, it's an 'Assistive Function' ingeniously integrated into the iOS system, dubbed 'Back Tap'. Through the pathway 'Settings > Accessibility > Touch > Back Tap', users have the freedom to tailor the actions that occur with a 'double-tap' or 'triple-tap' on the device's back. These actions range from capturing screenshots and turning on the flashlight to locking the screen. This handy feature is compatible with iPhone 8 and subsequent models (running on iOS 14 or later) and is crafted to boost user-friendliness and operational ease.