Samsung One UI 3.1 is out now, with improved photos and blue light adjustments

Samsung will start rolling out the latest One UI 3.1 software update to certain regions on Wednesday evening, bringing new features from the Galaxy S21 phone series to more devices, including the Galaxy S20 series, Galaxy Note 20 series, Galaxy Z Fold 2 and Galaxy Z Flip.

Samsung never uses stock Android software but instead puts its own spin on the design. In Galaxy's early days, it was something called TouchWiz, which was heavily criticized by reviewers. In late 2018, Samsung unveiled One UI with the aim to make it easier for users to navigate their phones. The third generation of the software arrived in December along with Android 11.

One UI 3.1 includes the following new features, all of which are already available on Galaxy S21 phones:

For more, check out how the One UI widgets stack up against those on the iPhone 12, and CNET's Galaxy S21 review and Galaxy S21 Ultra review.

CNET's Shara Tibken contributed to this report.