iPhone 16 Pro
Selecting Action button settings
You can select which function to activate when pressing the Action button on your phone.
Press Settings.
Press Action Button.
Slide your finger right or left on the screen to select the required function.
If prompted, follow the instructions on the screen to select more settings for the selected function.
Press arrow left.
Slide your finger upwards starting from the bottom of the screen to return to the home screen.