As much as I like the photos that I take with my “big” DSLR camera, I’ve stopped lugging it around. Sometimes convenience is more important than a big lens. With the improved camera on the iPhone, I tend to just snap my food photos before I eat, and avoid a fancy photo shoot. I imported a photo from my iPhone SE and did a little post-production on it. Yup, I think it looks fine for my purposes. That said, I still work on having the light (muted daylight is best) coming from one angle, and I only take close-up photos.
Usually every photo can look amazing on a computer screen — it all depends on the number of pixels on the screen. But, to print a photo, it has to be a certain size. These new iPhone SE photos are large so I think they will print without too much pixelation. I’ll find out later when I work on a new book…