Obviously, Buds Pro keep the 2 way speakers. They are also compatible with Dolby Atmos.
Galaxy Buds Pro also have a vent to balance pressure (like the Pixel Buds), and have IPX7 water resistance.
And, Galaxy SmartTag+ supports UWB for more accuracy. And, an AR Finder feature will guide you to your SmartTag.
Galaxy SmartTag is $30, available from January 19. Galaxy SmartTag+ later this year.
The Galaxy S21's refresh rate goes from 48 to 120 Hz. It also has an adaptive blue light filter.
There are new editing modes for portraits, for changing light direction, monochrome, and backdrop colors.
Samsung also partnered with their partners to give high quality images in Instagram, Snapchat and others.