For example, DisplayMate says the iPhone XS Max has a peak full-screen brightness of up to 660 nits for the sRGB and DCI-P3 color gamuts, which improves screen visibility in high ambient lighting ...

The iPhone XS Max has 6.5-inch OLED display with a resolution of 2688 x 1242, while the Galaxy Note 10's display measures 6.3 inches with a resolution of 2280 x 1080.