just buy a cheap phone.
You don't need microscopic pixels.
On a small screen even a moderate resolution will have really teeny tiny pixels.
This is my phone: https://www.amazon.com/DOOGEE-X30-An...70_&dpSrc=srch
I'd defy a human being not looking through a microscope to tell the difference between my creen and one on a $1000 iphone.
I have compared the two - and I like mine better lol