Samsung starts rolling out One UI 3.1 update to Galaxy M31s

One UI 3.1 is designed to help you focus on what matters. Our visual overhaul has improved the places you visit most, like the Home screen and Quick Panel, to reduce distractions, highlight important information, and make your experience more cohesive. Performance improvements will help apps run faster while using less battery power. And One UI 3.1 puts the control in your hands with new privacy controls, unique permissions, and improved digital well-being.

Scroll down for a full list of changes.

Visual aspect

We’ve refreshed the look and feel of One UI 3.1 in a number of ways, from new, more consistent icons to faster, smarter panel organization and notifications. Movement is smoother and more natural, with improved animation. And better interface response means the user experience is second to none, on any device.

Improved performance

We’ve optimized One UI 3.1 with improved dynamic memory allocation, so apps run faster and perform better. We’ve also restricted background activities to improve performance and power consumption.

Better customization

  • New categories of pictures have been added to the dynamic lock screen and you can select up to 5 categories at a time.
  • On the lock screen, you can add a widget to check your usage time.
  • Get an interactive preview when setting a wallpaper.
  • Setting always-on display and lock screen is easier.
  • Add a call background to see a photo or video when you make or receive a call.
  • In Samsung Internet, you can rearrange and lock tabs.
  • New lock screen icons and widgets make it easier to find and control your routines.
  • Use Digital Wellbeing with separate personal and professional profiles.

Improved functionality

Home screen and lock screen

  • Add widgets by long pressing an app on the home screen.
  • Turn off the screen by double-tapping an empty space on the Home or Lock screen. (Configure it in Settings> Advanced features> Motions and gestures.)
  • On the lock screen, tap the clock area to see widgets like calendar, weather, and music.

Calls and chats

  • View conversations separately in the notification panel. Works with Messages and your favorite chat apps.
  • Easily delete duplicate contacts stored in the same account in Contacts. The storage period for deleted contacts has been extended from 15 days to 30 days.
  • Added the ability to edit multiple linked contacts from a single screen.
  • Added recycle bin in messages so that recently deleted messages are stored for 30 days.

Photos and videos

  • Take pictures faster with improved automatic focus and exposure.
  • View, edit, and share photos and videos more easily from Gallery.
  • Find photos and videos faster with new Gallery search features and categories.
  • Revert edited images to their original version at any time, even after saving, so you never lose a photo.


  • The settings have a new, simpler appearance. Your Samsung account is displayed at the top and the home screen settings are now easier to access.
  • Find the settings you need more easily with new search features. You’ll get better results for synonyms and common misspellings, and you can tap the tags to see the associated parameter groups.
  • The quick settings buttons have been collapsed to provide only the most commonly used features. You can also add buttons to create your own personalized quick panel.

Samsung keyboard

  • Increased the number of input languages ​​to 370.
  • Added emoji and sticker suggestions when entering a text-based emoticon.
  • Improved keyboard layout to provide larger space bar when entering web and email addresses.
  • Keyboard settings reorganized for easy access to frequently used settings.


  • In the Internet, you can hide the status and navigation bars for a more immersive experience and translate web pages quickly.
  • You will be prompted to block websites that send too many pop-ups or notifications.
  • You can browse and select cloud drive files from the file selection screen in My Files.
  • You can now delete cache files in My Files to easily free up storage space.
  • Events with the same start time are displayed together in month and list views in Calendar.

Easy media and device control

Media and device control is made easier with the improved media panel in notifications. You can see recently used media apps and quickly switch playback devices. You can also check Android Auto settings in the Advanced Features menu in Settings.

Identify and improve your digital habits

The enhanced digital wellness features make it easy to check how you use your phone or tablet and help you build good digital habits. Check your usage while driving or see weekly changes to your screen time by function at a glance with enhanced weekly reports.

Accessibility for all

One UI 3.1 recommends useful accessibility features to you based on your usage. The enhanced accessibility shortcut makes it easier to start and use accessibility features. You can use the Speak Aloud keyboard input feature to get voice feedback for your typing even when TalkBack is turned off.

Enhanced privacy protection

You can now allow an app to access your microphone, camera, or location just once. Any permissions that an app has not used for a while will be automatically revoked. You can no longer allow apps to always see your location in the normal permission pop-up. To allow apps to access your location when not in use, you need to go to the app’s location permission page in Settings.

Some apps will need to be updated separately after the One UI 3.1 update.

Copies of applications made using Dual Messenger can no longer directly access files on the SD card. To share SD card files in an app copy, select the files in Gallery or My files, tap Share, and then select the app copy.

You can no longer connect to Chromecast using Smart View. You can use Google Home instead.

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