#Samsung Galaxy One UI 4 features

Samsung has officially rolled out the One UI 4 to the Galaxy S21, S21+, and S21 Ultra. According to Samsung, the One UI 4 enables users to create a customized mobile experience to meet their unique needs, hosting new color palettes, customization options for home screens, buttons to icons, and even reimagined widgets that offer their own customization. With the new UI, Samsung brings the latest privacy and security features, so users can choose what to share or keep private. The One UI 4 is now available on the Galaxy S21 series and will soon become available on previous Galaxy S and Note series and the Galaxy Z series, A series, and tablets. Samsung’s latest Galaxy flagship lineup leans into that idea. Instead of one “best” phone, you got several options powered by Galaxy AI: the Galaxy S25 FE, Galaxy Z Flip7, Galaxy ZFold7, Galaxy S25 Ultra, and Galaxy S26 Ultra, each designed for a different kind of user. It is positioned as a device that gives you a taste of the flagship experience without immediately committing to the highest price tier, which makes it a smart choice for users who want dependable performance and useful AI features in one package. It is Samsung’s thinnest Flip yet, and its compact form factor still feels like the biggest reason to own one, because it is simply easier to carry and easier to use one-handed than a lot of larger phones. Read more in our articles including "Samsung One UI 4 rolls out to Galaxy S21 series" and "Samsung’s Galaxy Flagship Lineup: Which One Fits You Best?".