How do I send a # or number during a call on iPhone 14 Pro?

The incoming call has a keypad in the lower right. I got here while on the call. Of course, you need to be using the Phone app to see this. If you’re not, press the phone icon.

[Edited by Moderator]

humanone wrote:

I tried on the phone app

Did you first click here ...

... then here?

[Edited by Moderator]

The upper choice, which you originally stated was for outgoing calls, may not look quite identical when an incoming call occurs, but the symbols shown near the bottom will appear, and tapping the keyboard symbol is required. The second screenshot then a0plies. The timing - clicking before answering the phone call - is not required.

humanone wrote:

It is the same issue !

That is correct.

The solution is as indicated above.