Galaxy S21, S21 Plus and S21 Ultra no longer receive security patches from Samsung

Samsung has removed the Galaxy S21, Galaxy S21 Plus and Galaxy S21 Ultra from the list of devices eligible for regular security updates. Essa decision came into force with the February 2026 bulletin and marks the official end of standard support for the line launched in January 2021. The devices will remain with One UI 7, based on Android 15, as the final system version.

The company fully complied with the schedule promised at the time of launch. The devices hit the market with Android 11 and received four major operating system updates, in addition to five years of security patches.

Owners of these models can still receive exceptional fixes in cases of critical vulnerabilities identified in the future. Essa practice follows the standard adopted by the manufacturer for devices outside the regular support cycle.

Chronology of updates received

The Galaxy S21 line has followed a consistent update schedule over the years. Devices received regular improvements that maintained adequate performance and protection throughout the support period.

• Android 12 with One UI 4 arrived in November 2021.
• Android 13 with One UI 5 was released in November 2022.
• Android 14 with One UI 6 landed in December 2023.
• Android 15 with One UI 7 was rolled out starting in May 2025.

The last regular security patch was applied in January 2026. The Essa sequence totaled exactly the four generations of

Changes to Samsung support policy

The manufacturer has evolved its update strategy over the years. Quando the Galaxy S21 line was presented, the company announced four operating system updates and five years of security, surpassing the previous standard of three years.

More recent models now have seven years of full support. Essa extension started to be applied from the Galaxy S24 series and expanded to other premium lines.

The transition reflects competition in the Android smartphone market. Fabricantes and Google offer similar or higher periods on Pixel devices.

Impact for related models

The Galaxy S21 FE maintains active support but has moved to quarterly security updates. Essa change aligned the model to the schedule of the Galaxy S22, S22 Plus and S22 Ultra.

Reduced frequency indicates preparation for future shutdown of these devices. Owners continue to receive fixes, but at longer intervals.

This change allows Samsung to focus resources on newer devices. The measure maintains basic protection without compromising the current user experience.

February 2026 Bulletin Details

The February 2026 patch fixed 37 vulnerabilities on eligible devices. Dessas, 25 were identified by Google in the core of Android and classified as high severity.

Samsung added 12 fixes specific to its software layer. Essas improvements covered components such as modem, camera and system framework.

The absence of the S21 line on the list confirmed the end of regular support. The official bulletin published on the company’s security website detailed all the changes applied.

Evolution of the Samsung flagship lines

The Galaxy S21 series introduced features that became standard on later models. The devices had an Exynos 2100 or Snapdragon 888 processor, depending on the region, and Dynamic AMOLED screens with a refresh rate of 120 Hz.

The 108 MP main cameras on the Ultra model have set the benchmark for mobile photography. The glass and metal construction guaranteed durability recognized by the market.

Launched in 2021, the devices competed directly with the iPhone 12 and Pixel 6. The line sold millions of units globally and helped consolidate Samsung’s position in the premium segment.

Alternatives for current users

Owners of the Galaxy S21 line maintain functional appliances for daily tasks. The original hardware supports modern applications and demanding games with good performance.

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Samsung recommends periodically checking for available updates. In rare cases, emergency fixes may be released independently of the regular cycle.

Users interested in newer features may consider current models from the brand. The Galaxy S25 and S26 series feature seven-year extended support.

Comparison with direct competitors

The Google offers seven years of updates on Pixel lines 8 and above. Essa policy is similar to that adopted by Samsung in recent devices.

Apple maintains long-term support for iPhones, often exceeding six years. The models receive iOS updates even after a long period on the market.

Chinese manufacturers vary in long-term commitments. Algumas brands promise four or five years, while others limit it to three.

Legacy of the Galaxy S21 line on the market

The series represented progress in the hardware and software integration of Samsung. Recursos as an improved DeX mode and compatibility with S Pen in the Ultra model influenced subsequent generations.

The devices contributed to the popularization of adaptive screens. The 120 Hz rate has become standard on practically all current flagships.

The complete support cycle reinforced consumers’ trust in the brand. Delivering on promises has helped position Samsung as a leader in Android software longevity.

Recommended security measures

Users must maintain safe habits regardless of official updates. Installing applications only from trusted sources reduces exposure risks.

Enabling two-factor authentication protects accounts associated with the device. Backup regular data avoids losses in unexpected situations.

Samsung Knox remains active on S21 line devices. The integrated security platform provides hardware-level protection against known threats.

Global distribution of changes

The removal from the support list occurred simultaneously in all regions. Usuários on América Latina, Europa and Ásia received the same official communication.

The Samsung security website has updated the list of eligible devices. The page reflects the changes applied in the February 2026 bulletin.

Owners can check the status directly in the device’s updates menu. The absence of new packages confirms the end of the regular cycle.

Perspectives for intermediate lines

A-Series models released in similar time periods are also approaching the end of support. Samsung applies different policies depending on the device category.

Premium lines receive priority treatment in updates. Dispositivos of entry have shorter periods, generally three to four years.

The strategy allows for a balance between innovation and maintenance of a broad ecosystem. Milhões of devices remain active even after official support ends.