We got the best Samsung deals! Galaxy S24 Ultra, Watch 6, Z Fold 5 or, Z Flip 5.

SamMobile has affiliate and sponsored partnerships. If you buy something through one of these links, we may earn a commission.

Notifications
    News for you

    Here’s how you can install the One UI 4.0 Android 12 update on Galaxy S21

    Phone
    By 

    Last updated: November 16th, 2021 at 19:11 UTC+01:00

    The One UI 4.0 beta program for the Galaxy S21 series has ended after a couple of months of testing in select markets, and the first public build is now rolling out worldwide. The Android 12-based firmware is packed full of UI tweaks, privacy improvements, and other enhancements, all of which can now be experienced by Galaxy S21 owners exclusively.

    Samsung will release the update to more Galaxy smartphones and tablets in the following weeks and months. For now, the Galaxy S21 has the privilege of being the first and only device in Samsung's portfolio to run a stable version of One UI 4.0. So, without further ado, here's all you need to know about installing the first public One UI 4.0 build on the Galaxy S21, Galaxy S21+, and/or Galaxy S21 Ultra.

    Download and install One UI 4.0 on the Galaxy S21 series

    One UI 4.0 is officially rolling out worldwide, but even though Samsung began seeding the update today, it will take a while before it reaches the Galaxy S21 series in every market.

    Some regions have priority over others, and carrier variants usually receive the update after unlocked devices, though it's not a rule. If you haven't received the notification for One UI 4.0 yet, don't worry. It should reach your device soon — in the coming days or possibly weeks.

    Where available, One UI 4.0 can be acquired like any other firmware update for Galaxy smartphones. You can tap the update notification when it arrives or attempt to trigger the update process through the Settings app. Launch it, then access Software updates and tap Download and install. The update may or may not be waiting for you, depending on the factors mentioned above, so you'll have to verify.

    If you're willing to put in a bit of extra work to skip the wait, there's an alternative method of getting the update up and running on the Galaxy S21. You can download the update files from the firmware section on our website and install One UI 4.0 manually using a Windows PC. We host Samsung firmware files for a wide variety of Galaxy S21 model numbers and markets as soon as they're available, so make sure to check back with our firmware page regularly.



    Phone Android 12Galaxy S21Galaxy S21 PlusGalaxy S21 UltraOne UI 4.0

    You might also like

    Galaxy S21 series grabs March 2024 security update

    Galaxy S21 series grabs March 2024 security update

    Samsung has started rolling out the March 2024 security update to the Galaxy S21 series in several countries worldwide, including the US. The Galaxy S22, Galaxy S23, and Galaxy S24 series have already received the update. The update could be released in other countries soon. Galaxy S21 gets March 2024 security update in Europe, Latin […]

    • By Asif Iqbal Shaik
    • 1 week ago
    Galaxy S21 Ultra was used to test Starlink’s satellite-to-phone service

    Galaxy S21 Ultra was used to test Starlink’s satellite-to-phone service

    SpaceX CEO Elon Musk announced that Starlink achieved peak download speeds for its satellite-to-phone service using a Samsung phone. It was then revealed that the test was done using a Galaxy S21 Ultra and in collaboration with one of the cellular service providers in the USA. Starlink gets 17Mb/s download speeds for satellite-to-phone service on […]

    • By Asif Iqbal Shaik
    • 3 weeks ago
    Carrier-locked Galaxy S21 gets February 2024 security update in the USA

    Carrier-locked Galaxy S21 gets February 2024 security update in the USA

    A few days ago, Samsung released the February 2024 security update to the Galaxy S21 series in Europe. A couple of days later, the update was released to the factory-unlocked units of the Galaxy S21 series in the US. The company has now started rolling out the new security update to the carrier-locked units of […]

    • By Asif Iqbal Shaik
    • 1 month ago
    One UI 6.1 update: Will your Galaxy phone get it?

    One UI 6.1 update: Will your Galaxy phone get it?

    The Galaxy S24 series was officially announced in mid-January with One UI 6.1 onboard, and Samsung will be spending the first half of 2024 working on and bringing One UI 6.1 to older Galaxy devices. A lot of Galaxy phones were eligible for Android 14 and One UI 6.0 and pretty much all of them […]

    • By Abhijeet Mishra
    • 1 month ago
    Unlocked Galaxy S21 gets February 2024 security update in the US

    Unlocked Galaxy S21 gets February 2024 security update in the US

    A couple of days ago, Samsung released the February 2024 security update to the Galaxy S21 series in European countries. Now, the availability of the update has been expanded to the Galaxy S21 series in the US. The factory-unlocked variants of the smartphones have now started getting the update. Galaxy S21 series gets February 2024 […]

    • By Asif Iqbal Shaik
    • 1 month ago
    Galaxy S21 series gets more secure with February 2024 security update

    Galaxy S21 series gets more secure with February 2024 security update

    Last week, Samsung started rolling out the February 2024 security update to its phones, and it was first released to the Galaxy Z Flip 3 and the Galaxy Z Fold 3. Now, the update is rolling out to the Galaxy S21 series, and it is currently available in Europe. More countries could get access to […]

    • By Asif Iqbal Shaik
    • 2 months ago