I will say I don't usually zoom in 200 percent or however close to look at that stuff. I know it's a sensor that's tiny. I can't expect much. I do edit them, but this one I really only darkened the blue sky and it does look like I sharpened it up a bit. It's deff not edited to the max tho, but what I did probably did degrade it and being compressed by all the trips it's taking.I don’t know. Your pic exemplifies aggressive noise reduction. If you zoom in, there’s no detail at all. Very blurred and grainy for a landscape shot on a sunny day.
I guess I used a bad example for "right out of the phone"
I put it through Lightroom mobile and when it exports I'm pretty sure it's getting compressed. The desktop does not do that. I upload high res files from the desk top to my website. That I learned about to difference. But for facebook, and here, it's all mobile usually. People are supposed to enjoy them for what they are and not examine the specifics of the pixels. Used to do that all the time (Pixle peeping) My 5DIII does my main shooting, but I like using the phone for stuff like this and editing will do a lot more to degrade the pictures on a phone with a small sensor. It is what it is tho.
I'll post up a native XS Max photo in a little bit. See how it really looks. Sorry for wrong example