Apple replaces iPhone side switch with customizable "Action button" on iPhone 15 Pro models

The new Action button provides quick access to functions like camera, recordings, and shortcuts.
Users can still mute the iPhone by holding down the Action button.
The Action button features haptic feedback and can be programmed via iOS settings.
Apple states the Action button increases water resistance and provides more utility.
Experts say the change aligns with evolving smartphone usage patterns over the years.