End of the Road: Samsung Officially Terminates Software Support for Galaxy S21 Series

Samsung has officially announced the conclusion of software support for one of its most popular flagship lineups, the Galaxy S21 series. Following the detailed rollout of the February 2026 security patch for newer devices, the tech giant clarified that the 2021 flagship trio has reached its final milestone in terms of regular maintenance and security enhancements. This marks a significant transition for millions of users who have relied on the Samsung Galaxy S21, S21+, and S21 Ultra over the last several years.

Details on the Termination of Software Updates

According to the latest documentation regarding the February 2026 security update scope, the Galaxy S21, Galaxy S21+, and Galaxy S21 Ultra are no longer listed as compatible devices. This removal signifies that these smartphones will no longer receive software updates on a monthly or quarterly basis. While Samsung occasionally issues emergency patches for critical vulnerabilities that pose a severe threat, the era of regular feature additions and standard security maintenance for the S21 series is now over.

The Galaxy S21 series made its debut in early 2021 and has been a cornerstone of Samsung's mobile strategy. It received its final major platform upgrade, the Android 15-based One UI 7.0, during the first half of 2025. The very last security patch for these devices was deployed in November 2025, providing a final layer of protection before the devices were transitioned to "End of Life" status for software.

Fulfilling the Four-Year Update Commitment

Samsung has successfully kept its high-profile promise to provide four major Android operating system updates for the Galaxy S21 lineup. Over its lifecycle, the series has seen a remarkable evolution in software:

• Android 12 (One UI 4): Released in November 2021.
• Android 13 (One UI 5): Released in November 2022.
• Android 14 (One UI 6): Released in December 2023.
• Android 15 (One UI 7): Released in May 2025.

In addition to the news regarding the S21, Samsung has also adjusted the support cycle for the successor series. The Galaxy S22, Galaxy S22+, and Galaxy S22 Ultra have been moved from a monthly schedule to a quarterly security update schedule, indicating that they are also entering the later stages of their supported lifespan.

Will the Galaxy S21 receive any more security patches?

Regular security patches have been terminated as of February 2026. However, Samsung may still release "emergency" updates if a critical, high-risk security vulnerability is discovered that requires immediate patching to protect users.

What is the highest version of Android available for the S21 Ultra?

The Galaxy S21 Ultra, along with the standard S21 and S21+, supports up to Android 15 with One UI 7.0. This was the fourth and final major OS upgrade promised by Samsung for this specific generation.

Is it safe to continue using the Galaxy S21 in 2026?

While the hardware remains capable, the lack of new security patches means the device will become increasingly vulnerable to new exploits over time. Users who handle sensitive data or banking on their phones are generally advised to upgrade to a supported device.

What happened to the Galaxy S22 update schedule?

As the S21 support ends, the Galaxy S22 series has been moved to a quarterly update cycle. This means S22 users will now receive security updates every three months instead of every month.

Did the Galaxy S21 FE also lose support?

The Galaxy S21 FE (Fan Edition) was launched later than the original S21 trio and typically follows a slightly different support timeline. Users should check their specific model's status in the Samsung Security scope for the most accurate information.

🔎 The retirement of the Galaxy S21 series from the active update list marks the end of an era for a generation of devices that redefined Samsung’s flagship design language. While it is disappointing for long-term owners to see support conclude, Samsung’s fulfillment of its four-year OS promise demonstrates a strong commitment to device longevity. As software threats evolve, transitioning to newer hardware like the Galaxy S25 series ensures that users remain protected by the latest security innovations and continue to enjoy the cutting-edge features of the One UI ecosystem.