This is an initial first-impression review and comparison of iPhone 11 Pro to Huawei P30 Pro and Samsung Galaxy S10+ from DxOMark:
The ability to preview bokeh and HDR prior to shooting is not only a technically-impressive accomplishment by Apple, it is a big win for photographers. Until now it has been mostly a matter of guessing how a Portrait-mode or HDR image would look, often requiring repeated trial and error to get the desired results. This is a particular issue for beginning photographers, or those new to a particular phone, until they learn its capabilities. But with the iPhone 11 family of phones, they can see much more accurately what they are going to get before they press the shutter button.
Check out the comparison photos.