Two ways to interact with the Apple logo
These features are provided by the Accessibility feature, which makes iPhone easier for people with disabilities to use. It’s called Back Touch and was introduced back in iOS 14. The basic idea is that you can assign different actions to tapping the back panel in the Apple logo area.
To enable this feature, you must open “Settings” then select “Universal access” and go to the section “Touch”.
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Then you should select “Touch From Behind” and customize actions for double and triple taps.
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Almost all standard programs and settings can be used for these actions. This way you can perform various tasks, such as taking screenshots, adjusting the volume, and launching shortcuts.
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To perform the assigned action, simply tap the back panel twice or thrice with your index finger while your iPhone is unlocked. Although double tap is easier and faster, false positives are possible. In case of problems, it is recommended to use a triple tap, while deactivating the double tap.