Its 120Hz variable refresh rate plunges as low as 1Hz when needed, and it’s smooth through everyday tasks. The panel tops out at 1,750 nits of peak brightness, and the color recreation is excellent across the full spectrum. Display: Capping off the Galaxy S23 Ultra’s massive footprint is Samsung’s 6.8-inch Quad HD+ (3,088 x 1,440) AMOLED panel, which hasn’t lost an ounce of quality.