Samsung One UI 3.1 review: Subtle changes create a big impact

Android 11 on the Galaxy Note 20
Android 11 on the Galaxy Note 20 (Image credit: Hayato Huseman / Android Central)

With the Android 11 update, Samsung offered a visual overhaul to its UI in the form of One UI 3.0 and 3.1. One UI 3.0 debuted earlier this year for the Galaxy S20 series after being in beta for a few months, and with the introduction of the Galaxy S21 series, Samsung added a few new features and released the build as One UI 3.1.

Samsung is doing a much better job with software updates over the last two years, and the result is that the best Samsung phones have already been updated to One UI 3.1. The UI offers new aesthetics and improved first-party apps and includes all the new features Google introduced in Android 11.

So if you're already running One UI 3.1 or are considering buying a Samsung phone this year, here's what you need to know about all the new features in One UI 3.1.

One UI 3.1 adds Android 11's core features

Source: Android Central (Image credit: Source: Android Central)

When it first rolled out to devices like the Pixel 5, Android 11 had a clear focus on improving notification management, and though the look of One UI is drastically different from that of "stock" or "pure" Android 11, the same core tenets are all here. One UI 3.1 now groups notifications by category, broken down into conversations, alerting notifications, and silent notifications.

Just like on other Android 11-powered devices, this categorization makes it subtly easier to prioritize notifications; if something pops up in the conversations tab — say, a Telegram or Slack message, it doesn't get lost in the mix of incoming emails, news, and weather updates, and the like.

If you want to go a step further and really bring conversational notifications to the forefront of your attention, One UI 3.1 supports Bubbles, those love-it-or-hate-it floating app icons directly inspired by Facebook's old Chat Heads system. I'm personally not a big fan of Android 11's Bubbles, but they're a bit easier than jumping back and forth between your messaging app and whatever other task you're in the middle of.

Samsung brought over nearly every Android 11 feature, but I really would've loved a better power menu.

Continuing on the topic of notifications, there's a new Gaussian blur effect behind the notification shade that provides clear separation from the rest of the screen. It makes notifications a bit easier to read and persists to various parts of the One UI interface, including the quick toggles screen and app drawer. If you accidentally dismiss a notification without reading it, you can also now view your notification history in the system settings. Just be sure to enable it first; it's an opt-in setting.

Just like in Android 11 on the Pixel 5, music and video playback now conveniently reside in a single persistent widget above your notifications — though unlike on the Pixel, this only happens when you're managing multiple streams at once. When you're merely watching a video, it lives in its own notification, just as it did in Android 10.

Unfortunately, the one feature that seems to be missing in One UI 3.1 is the revamped power menu we saw in Google's Android 11, which introduced card management for Google Pay as well as quick toggles for your smart home devices. Instead, you're presented with the exact same basic shortcuts as before; power off, restart, and emergency mode, along with side key settings to toggle power button functionality between the power menu and Bixby (which, for the record, is still the default behavior).

While disappointing, this makes sense. Samsung would, of course, rather encourage you to use Samsung Pay over Google Pay, and includes a quick swipe up shortcut from the bottom of the home screen to access your default credit card. The company also has its own Smart Things system for connected devices, and well, Bixby is Bixby.

One UI 3.1 introduces a major aesthetic overhaul

Source: Android Central (Image credit: Source: Android Central)

The addition of Gaussian blur isn't the only change Samsung made to One UI's look and feel. In fact, nearly the entire interface has been refreshed with more modern visuals and, at least in most cases, cleaner and easier to navigate menus. The icons in the Settings app have been refreshed with the same "squircle" borders One UI imposes on the icons in your app drawer, and the menus have been simplified a bit to make key settings easier to find. I've always found Samsung's settings menus to be messier and more complicated than others, so this is a nice step in the right direction.

Back on the home screen, long-pressing on an app icon shows a similarly tidied menu compared to One UI 2.5, condensing actionable items into a single window instead of separating app-specific shortcuts from system-level actions like uninstalling the app. You can also now double-tap on any blank space on the home screen to turn off the screen without having to press the power button. Nice!

Source: Android Central (Image credit: Source: Android Central)

Interestingly, Samsung Daily (the news feed to the left of the home screen) has been replaced with a new service called Samsung Free, which similarly rounds up news from various sources, but also gives you access to instantly playable games handled through Samsung Game Launcher, without any additional downloads required. At least at the time of writing, these are mostly the kind of low-effort games you'd see advertised in other freemium titles, but it's a nice inclusion nonetheless.

One UI 3.1 also brings minor improvements to the lock screen, with a new full-screen scrollable list of widgets giving you quick access to features like your music, schedule, weather, and Digital Wellbeing stats, all accessible by selecting the on-screen clock — which is now centered instead of being left-aligned. There are more comprehensive Always-On Display settings now, as well, including the ability to load your own GIFs.

Many of Samsung's first-party apps have been updated with slightly a modern design, including Phone, Samsung Pass, Gallery, and more. Most of these are fairly subtle, but it leads to a somewhat more cohesive overall look.

When I demoed the One UI 3.0 beta last year, one of the more controversial changes in the eyes of Samsung fans was the redesigned volume menu, which opens as a minimalistic vertical slider when you press either of the volume buttons. By tapping the three dots at the top of the slider, you can open an expanded menu with sliders for system volume, alarms, media, and so on. I think this is a great look, but it's admittedly less straightforward than before, relying on icons rather than text labels to denote each slider.

Within that expanded view is also Live Caption, which transcribes dialogue audio in real-time. This setting was available in Android 10 as well, but again, it's denoted by an icon rather than text here, for better or worse.

Camera improvements in One UI 3.1

Galaxy Note 20 Ultra

Source: Hayato Huseman / Android Central (Image credit: Source: Hayato Huseman / Android Central)

The camera software in One UI 3.1 looks virtually identical to the implementation in One UI 2.5 on Android 10, but Samsung claims to have improved a few features under the hood relating to the image capture process. Namely, phones with high zoom levels like the S21 Ultra and Note 20 Ultra can now supposedly benefit from improved image stabilization while taking photos of the moon — an oddly specific feature that I wasn't able to test.

More broadly, both autofocus and auto-exposure should see improvements with the One UI 3.1 update. This is, again, a change that would likely be most noticeable on last year's S20 Ultra, which remains the only phone in Samsung's 2020 lineup with which I've experienced focusing problems.

One UI 3.1 Bottom line

Samsung Galaxy Note 20 and Galaxy Z Flip 5G

Source: Hayato Huseman / Android Central (Image credit: Source: Hayato Huseman / Android Central)

If you're expecting a complete overhaul rebuilt from the ground up, this isn't it. One UI 3.1 introduces subtle aesthetic and functional tweaks to what was already a mature and capable interface in One UI 2.5. There really aren't many must-have feature additions here; part of that is because Samsung tends to offer many of its software features before Google introduces them to the baseline Android platform, so much of what's new in Android 11 was already present in Samsung's version of Android 10.

4.5 out of 5

Still, this is a nice update that gives One UI some modern visual polish and largely improves notification management above all else — and more importantly, Android 11 brings Samsung's phones up to the same privacy and security standards as Google's Pixel line.

Samsung is already ahead of its own roadmap for the One UI 3.1 rollout to various devices, with most of its 2020 and 2019 devices receiving the latest version. Samsung's decision to offer three guaranteed Android updates to its flagships and mid-range phones gives it a distinct edge in this particular area. With One UI 3.1, the brand has shown that it can deliver a user interface that rivals the best that Android has to offer.

One UI 3.1 Changelog, May 2021

This review was initially published on 23 December 2020 and was based on One UI 3.0 running on a Galaxy Note 20 Ultra. It has been updated on May 3, 2021, with the following changes:

  • Added details on the changes in One UI 3.1
  • Included information on the Galaxy S21 series
  • Changed the section on One UI 3.1 rollout based on Samsung's updated timelines

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Harish Jonnalagadda
Senior Editor - Asia

Harish Jonnalagadda is a Senior Editor overseeing Asia at Android Central. He leads the site's coverage of Chinese phone brands, contributing to reviews, features, and buying guides. He also writes about storage servers, audio products, and the semiconductor industry. Contact him on Twitter at @chunkynerd.

  • So nothing about the weirdly laggy recents menu, or how Samsung has completely overhauled how split-screen mode works (and not for the better)? I'm seriously considering jumping ship to a Pixel for both of these reasons. This has been an extremely disappointing update so far, and I'm usually a big fan of updates with significant UI changes.
  • The recents menu is perfectly fluid for me, where do you see lag? What is laggy for me are the new app icon menu on the launcher and the volume overlay animation.
  • It drops frames like crazy, particularly when I use button navigation and do the "double press recents to switch between the last 2 apps" thing. Even gesture navigation doesn't feel smooth or fluid at all. Swiping to go home will give me a low-framerate animation most of the time, which is really noticeable because I always keep the display set to 120hz. I might try a factory reset and see if that helps.
  • Install Galaxy labs and then run the Galaxy app booster, see if take care of your problems
  • Personally no lag anywhere for me since updating. Using the dual sim HK Snapdragon S20 Ultra 512GB variant.
  • I received 3 last night on a unlocked Note 20 ultra so far so good. It was a little strange that I received first the November patch separately then I received the OneUI update that included the December patch I would have thought it would been together. Also I received a notification right away after the OneUI and December patch install from Galaxy labs to run app booster. I also did cache wipe in android system recovery as I usually do after OS update.
  • I got my Verizon update a few days ago and immediately regretted updating. Samsung makes its UI more ugly with every OS update. This is probably my last Samsung phone.
  • Difficult to convince everyone i guess
  • I got my update on my Xfinity Note 20 5G 4 days ago.
    Everything is fabulous and fluid with no viscosity.
  • I got the update yesterday on my S20 FE here in Canada. Looks good so far. Just don't like the power button being gone...
  • Your power button disappeared after the update? That sounds like a hardware issue. LOL
  • Anyone figure out how to assign custom colors yet for apps the new rebranded edge lighting aka brief pop-up settings? Or is that gone for now? Not sure why they would remove that option.
  • Does the "Color by keyword" do what you're wanting?
  • Updated wifes s20 whetever and it did absolutely nothing, no visible change to anything whatsoever.
  • Absolutely nothing? Then it must not have updated.
  • Working fantastic for a couple weeks now on the Unlocked Note 10+ (SM-N975U1)! NO ISSUES AT ALL!
  • I love One UI 3.1, it took a bit of getting used to on my S20 FE 5G but I really like it.