Now, according to the official information, Samsung has started rolling out the Android 13-based One UI 5.0 beta update for Galaxy S21, Galaxy S21+, and the Galaxy S21 Ultra in China.
Samsung also reminds you that due to the nature of beta releases, unexpected errors may occur, please make sure to back up important data. Alos, a few features may not work properly in some applications. Some apps are not available in the current One UI 5 Beta version.
How to register your Galaxy S21 in the One UI 5.0 beta program?
In order to join the One UI 5 Bet program in China and if you own Galaxy S21 series phone along with you then you need to install the Samsung Members app and log in with your credentials.
Samsung has started sending out the One UI 5 beta program through a banner link inside the Members application. You need to enroll for the beta process and then you are ready to test the One UI 5.0 features based on Android 13.