Galaxy S21 Ultra reportedly features a better camera sensor than S20, could also support 120Hz refresh rate at QHD resolution - MSPoweruser
Samsung Galaxy S21 Ultra to support WQHD+ display and 120Hz refresh rate - Gizmochina
How to enable both 120Hz and Quad HD+ on your Samsung Galaxy S21 Ultra | Android Central
Fossbytes - Samsung Galaxy S21 Ultra 5G with 120Hz Display, Snapdragon 888 5G Launched No charger included. They became the very thing they swore to destroy 😅 | Facebook
Galaxy S21/Ultra/Plus: How to Set Screen Refresh Rate to 60Hz or 120Hz - YouTube