During calls on my iPhone 14 Plus, the screen goes black and takes 5-6 minutes to wake up

There is a proximity sensor near the top of the screen; it’s purpose is to disable the screen when you hold the phone to your face so you don’t accidentally touch any of the call screen buttons with your face. But if you cover that sensor with your hand, a case, or a screen protector it will always turn the screen off when on a call. It looks like a tiny red dot near the top of the screen.