Unfortunately, I don't have a Galaxy Note20 Ultra to investigate other potential differences, but Andrei from Anandtech found the panel in the Galaxy S21 Ultra to be even more power-efficient than the one in the Note20 Ultra. However, one major difference with the new Galaxy S21 Ultra is that it finally allows its 120 Hz refresh rate at the display's native QHD resolution - previous Galaxy flagships were stuck with the FHD (1080p) render resolution if they wanted to use the 120 Hz high refresh rate mode. In terms of brightness, both also boast a peak of 1,500 nits. On paper, the panels seem extremely similar: Both are large QHD panels with support for up to 120 Hz refresh rates, and both advertise a next-generation LTPO panel with VRR (variable refresh rate) support. When compared to the Galaxy Note20 Ultra, Samsung hasn't mentioned any huge changes. While the Galaxy S21 Ultra shows off Samsung's newer OLED technology, let's see if it also manages to improve its image quality. New emitter material and driver adjustments may also impact image quality. Sometimes technological improvements have introduced new problems: For example, high refresh rate panels introduced color shifting when the phone switched refresh rates, and software solutions had to be created to solve this problem. While the technology may be improving, companies need to make sure that they keep their calibration quality in check. The latest panels aren't always the best panels, however. With Samsung Display still leading the industry's progress in mobile screens, the new Samsung Galaxy S21 Ultra showcases the bleeding edge in mobile display technology and give us hints on what to expect from displays on phones released in the near future. The launch of new Galaxy devices is always an exciting time for display tech enthusiasts. When you make a purchase using links on our site, we may earn an affiliate commission. Readers like you help support XDA Developers.
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