One UI 4 Samsung starts stable deployment of One UI 4 on its devices 3 years ago Samsung device owners have been anxiously anticipating their chance to see the new One UI since Android 12 was released.… Samsung launches One UI 4 for Galaxy S21 phones, which is based on Android 12 3 years ago Samsung has announced that the One UI 4 software update for the Galaxy S21, S21 Plus, and S21 Ultra will…