On the software side of things, Samsung has done something a little bit special with the Galaxy A51. They've actually shipped it with Androids latest OS- Android 10 out of the box. It's special because Samsung usually reserves the latest iteration of Android for its flagship Galaxy S series... but here it is, breaking tradition and running on a mid-budget phone, well before the launch of the Galaxy S20. Samsung's second-generation One UI also runs on top of Android 10 and has been streamlined in order to further reduce on-screen clutter and confusion. It mostly includes subtle changes that primarily affect notifications, dark mode and the lock screen.