On Tuesday, Samsung launched its beta program for Android 12 and One UI 4. Along with the list of many new features and updates for the Samsung Galaxy S21, S21+, and S21 Ultra is support for eSIM in the US. eSIM allows a smartphone to be registered to a network without needing a SIM card. You'd only need to provide a unique eSIM number to your carrier to activate service. Galaxy S21 variants outside of the US come fitted with dualSIM trays while the US variant's supports a single nanoSIM at a time. Android 12 will enable eSIM support for the Galaxy S21 lineup with the option to use dualSIM...
Source: https://www.gsmarena.com/samsung_galaxy_s21_lineup_gets_esim_support_in_us_with_oneui_4_beta-news-50964.php
