A few taken today with just the inbuilt camera app and with the HDR turned off. I've tried to offer a diversity of images here.
For some reason, a few of these images don't appear to be showing on this forum, however if you click on them and select to open them in a new tab, they are actually there for you to view!
These first three were taken in fairly low light, which is confirmed by the lack of hard shadows from above, being in a very large shed. The camera actually coped with the low light levels very well. The skylights in the first two have blowout highlights. In the third image the highlights are blown out on the meat packaging in the display fridge and also in the doorway up top of the frame, but considering this is not a DSLR it's quite impressive.
Now an assortment of shots, again with the HDR turned off.
And now, testing the portrait mode out on a friend.
Now a couple of landscapes. The inbuilt camera app copes well when you face away from the sun, as shown in these two images, but falls apart when faced with bright clouds, which it blows out, so there is no detail in the whites and quite large sections of the sky turn white, rather than being blue, but to be fair, even DSLR's struggle with this too. It is very common for photographers to blend together two exposures, one for the highlights and one for the shadow details in post production software. This is what the HDR feature of the iPhone's attempts to do, and I am about to discuss in another thread, with many before and after examples to illustrate its benefits and shortcomings.
And finally, a Moreton Bay Fig Tree's roots, which presents a pretty wide dynamic range with a bright sky, sections of the roots lit by the sun and some deep shadows. Quite a lot for a little sensor to try and cope with, but this camera did pretty well actually, considering the huge challenge thrown at it!
In previous comments, I have mentioned using a third party app for access to the RAW image files, which require you to edit them to bring out the details, colours and vibrancy that's available from them, but for those of you who just want something straight from camera and using the inbuilt camera app, it's quite capable indeed!
None of these images presented in this post have been edited, they were imported into Lightroom, no profile fixes were applied to them and they were just exported as jpegs, so they are straight out of camera, basically.
Personally, I find the Portrait Mode to be a bit of a gimmick and I'll shoot using a third party app, as the RAW files have so much more information within them, something I quite enjoy drawing out of them in Lightroom and Photoshop, but for the 99% that don't, you will enjoy using the inbuilt camera app, I'm sure and will be well pleased with the results you get from it.