The phrase "switch button" refers to a small device that you can press or manipulate to make something change or turn on/off. It is used to control the function or operation of a machine or electronic device. Full definition
He also expressed that the phone adds a dual - camera switch button on the top. (myfixguide.com)
You get the camera switching button, flash controls, wide - aperture mode and moving picture mode on top of the screen. (techradar.com)
On the plus side, mapping the extra buttons is practically effortless, and players will be able to use the pad's profile switch button for up to two custom button configurations. (techtimes.com)