iPhone 18 Pro Max

Requires: iPhone with an Action Button (iPhone 15 Pro or later; see the models), iOS 17 or later

Apple: to perform the assigned action, press and hold the Action Button. Every press-and-hold runs Send signal once, so presses are counted one by one. Send signal is an App Shortcut, so it is listed as soon as DBP Shield is installed. With Shortcut selected but no shortcut chosen, the button does nothing. On iOS 18 or later the button can instead be set to Controls › Shield, but those presses arrive as control events, not action_button. The Action Button replaces the Ring/Silent switch.

Requires: iPhone 8 or later with iOS 14 or later (DBP Shield itself needs iOS 17)

Back Tap runs a shortcut from your Shortcuts library, so first create one in the Shortcuts app with DBP Shield › Send signal (Trigger: Back Tap (double)). Each double tap runs it once, so one double tap is one event. Apple doesn't say whether Back Tap works while the iPhone is locked or in a case: build the shortcut with Send test signal first, try it, then switch it to Send signal.

Requires: iPhone 8 or later with iOS 14 or later (DBP Shield itself needs iOS 17)

Back Tap runs a shortcut from your Shortcuts library, so first create one in the Shortcuts app with DBP Shield › Send signal (Trigger: Back Tap (triple)). Each triple tap runs it once, so one triple tap is one event. Apple doesn't say whether Back Tap works while the iPhone is locked or in a case: build the shortcut with Send test signal first, try it, then switch it to Send signal.