One UI beta program for s21ultra

You will be get it may be within 2 months. When it's available for your's device you will be get a Beta program banner on Samsung Members App, click on it and register yourself on it and go to setting and click on software update and update your's device. If you like please accept as a solution it's help to others users also, click on 3dots in my reply section and click on accept solution. Thanks.

Your's most welcome to here.