In the Camera app if I click on the flash icon in the top left it just disables the flash and changes the flash icon to have a slash through it. Clicking again on the flash icon (now with the slash through it) enables the flash and removes the slash in the icon.
In all other iPhones I have used, including an iPhone XS running ios 13.1.1, clicking on the flash icon brings a choice of flash modes: Auto / On / Off. I called Apple Support about this and they suggested to Restore the factory settings of the phone. I don't want to take this drastic action now since I don't want to have to redo all of the settings I have changed. I'm also not convinced that it will fix the problem. Does anyone else have an iPhone 11 or 11 Pro that can tell me what they see when they click on the flash icon in the Camera app? Any suggestions for how to get the selection of flash modes to display?