Switching from phone keypad to screen that allows speakerphone
I have an iPhone 8. When I am on a call, the keypad is open. If I want to switch to the screen that allows speakerphone and other options. I have read solutions that have been given to others, but there is no "hide" button at the bottom of the screen and no green bar at the top. How can I do this?
iPhone 8, iOS 15