B. 63 prior to applying for the open beta program. And once you get the beta update, make sure your gadget has at least 60% battery and 5GB of internal storage prior to continuing with the setup.

Source 1, Source 2

Realme has revealed the Android 11-based Realme UI 2.0 open beta program for the Realme 6 and 6i (Indian variant). Those interested can enroll in the program by navigating to their smartphones Settings > > Software update menu and tapping on the Settings icon in the upper-right corner, then on Trial Version, and after that on Apply Now. If your application is chosen, youll get the beta build on your device.

Realme says users who are a part of the early gain access to program need not join the open beta program given that they will directly get the beta updates, and those who took part in the beta program will get the newest beta firmware as the steady build when it is presented for all other users.