Although the version Minecraft 1.16.100 there seemed to be an incredible number of edits, but it turned out that it had one serious vulnerability due to which Android phones cannot connect to Realms if you play using the mobile Internet.
That is why there was a hasty release of Minecraft 1.16.101 and we recommend installing it. The error is really annoying and worth dealing with. By the way, beta testing continues and its participants find new bugs that are fixed online.