I had both, and every time I would compare pictures, my iPhone 11 Pro Max would win. It even came to a part where I questioned how is the pixel 4 even a good camera? Even had to contact google care to see if they can solve the issue on my pixel 4. They said that’s how the pictures looked and I was very disappointed. So I gave it to my dad 😂 he doesn’t care for it. But long story short iPhone wins. ( side note I used the S20 Ultra and compared it in my store. I worked for Tmobile, and all my co workers said the s20 camera was trash. They all android users lol)