I have a Moto X with a dying battery. I plan to purchase a new phone. Any recommendations on which phone has the best screen visibility in bright sunlight?
Probably the Samsung S7 and S7 edge. High end Samsung devices are usually near the top of the reviews with regard to display brightness and contrast ratios.
Typically the high end Samsung S7 series phones have at least > 500 nits of brightness which is quite bright and the color is quite vibrant also as well.