A few weeks ago, Samsung started sending out One UI 5.1 to several models. including the Galaxy S21 and S22 trio. But it doesn’t seem to be all positive things with this update for the models.
It seems that the battery life in the S21 and S22 trio dropped drastically after the latest update for the mobiles. The source writes that “it cannot be due to anything other than the One UI 5.1 update to the models” and I agree that it would be extremely suspicious if there is something else wrong when these models received One UI 5.1 recently and they started reporting the same problem in several different models at the same time.