One UI 3.1 has been rolling out to older Galaxy devices quickly in the last few months. Despite only being an incremental upgrade over 3.0, it carries over several useful features from the Galaxy S21 to its older siblings. Over the last few weeks, One UI 3.1 has arrived for several mid-range devices and some T-Mobile variants.
Samsung has put a lot of effort into improving its software reputation, and a big aspect of that change has been a renewed focus on issuing regular security updates. Over the last couple of years, Samsung has frequently managed to beat Google to the punch, and that continues even now as the Galaxy Note10, Z Fold2, and S21 have all received the April security patch, more recently followed by the Galaxy A72, Tab A 10.5 (2018), and Tab S7+.
Samsung started beta testing its Android 11-based One UI 3.0 update a few months ago, and ever since then it's been expanding to more test devices and locations. Now the company has released official details for when the final One UI 3 release is expected to start coming to many of its handsets in markets worldwide, giving Galaxy users an idea of when to expect the upgrade on their own phones.