how to end call with iphone 11 button

The claim that pushing the power button on iPhone 11 ends a phone call is FALSE.

There is no published option to ENABLE phone-call-ending with button push.

When the phone screen with the red button is not visible, some other way is needed!

Here are the only two ways that I have found:

1. put the iphone in airplane mode and wait for it to disconnect.
2. hold down a volume button and the power button simultaneously:

from the options "slide to power off", "medical id" , "emergency SOS" and "Cancel",

choose Cancel as least-disruptive. That ends the call if you don't accidentally push "emergency SOS"

(suppose I'm blind?)

C'mon Apple, answer the question and provide a simple button-option!