iPhone 15 Pro, what does the new Action button do?

The Ring/Silent switch on the upcoming iPhone 15 Pro and Pro Max should be replaced with a new multi-function button.

The latest rumors saw Apple keeping the traditional volume and power buttons on the next iPhone 15 Pro and Pro Max, instead of new touch surfaces abandoned at the last minute due to technical problems.

iPhone 15 Pro/Pro Max, New Pressure Sensitive Action Button

However, the old Ring/Silent switch should be replaced by a new Action button similar to that of the Apple Watch Ultra. The anonymous "leaker" @analyst941 tells us more about him. We thus learn that it will be sensitive to pressure levels and will therefore have several functions depending on the pressing force: for example in the camera application, light press for autofocus, simple press to take a photo, long press to record a video.

It should also be used to turn off the device in combination with the power button, replacing the Volume Up button which previously performed this function.