Samsung's Galaxy S20 trio supports 120Hz screen refresh rate, the company's first phones to go over 60Hz. But unlike other phones with high refresh rate screens, there's no middle ground - it's 120Hz or 60Hz. That's the case officially, but it turns out that the phones have a hidden 96Hz option. It can be enabled via ADB, but XDA forums member SatySatsZB created a much more convenient solution - an app you can download from here. It places two toggles in your status bar that let you switch between 96Hz and 120Hz. The S20 Refresh Rate Controller app It places quick toggles in the...
Source: https://www.gsmarena.com/the_samsung_galaxy_s20_has_an_unofficial_96hz_refresh_rate_mode_you_can_enable_it_with_an_app-news-42358.php