The Samsung Galaxy S21 series has reached a critical milestone, receiving its likely final scheduled security update in January 2026. This marks the end of guaranteed software support for the Galaxy S21, S21+, and S21 Ultra models. Launched in January 2021, these popular smartphones were initially promised five years of security updates, a period that has now concluded. Approximately 25.5 million units of the S21, S21+, and S21 Ultra were shipped globally, leaving a significant number of users with devices that will no longer receive regular protection against new cyber threats.[forbes+3]
End of Regular Protection
For owners of the original Galaxy S21, S21+, and S21 Ultra, the January 2026 security patch is expected to be the last. This update addressed 55 security issues, including one critical vulnerability identified by Google and 20 high-risk problems within Android. Samsung also included 30 additional security fixes specifically for Galaxy phones. While this patch improves device security for now, future threats will likely go unaddressed.[sammyfans+2]
The end of regular security updates means these phones become more susceptible to malware, data breaches, and other cyberattacks. Experts warn against using smartphones without ongoing security patches. Such devices pose a greater risk to personal data and overall digital safety. Continued use without updates can expose sensitive information to malicious actors.[forbes]
What This Means for Users
When a smartphone no longer receives security updates, its vulnerabilities can accumulate over time. New exploits discovered by hackers will not get official fixes from Samsung. This situation makes the phone a less secure environment for banking, shopping, and managing personal information. Users might not notice an immediate change, but the risk grows steadily.
The Galaxy S21 series also received its last major Android operating system upgrade, likely Android 15 (One UI 7). This means users will not get new features, performance improvements, or interface changes that come with future Android versions. While the phone may still function, it will not evolve with the latest software innovations.[sammobile+1]
Options for Galaxy S21 Owners
Users with a Galaxy S21, S21+, or S21 Ultra now face a decision. One option is to continue using their device, accepting the increased security risks. However, many cybersecurity professionals advise against this practice for phones used for sensitive tasks. The lack of ongoing protection can compromise personal and financial data.[forbes]
Another option is to upgrade to a newer smartphone. This ensures continued access to the latest security patches and operating system features. Newer Samsung Galaxy models, starting with the S24 series, now offer up to seven years of security and operating system updates. This significantly extends the usable life of a device.[security+2]
Samsung's Evolving Support Policy
Samsung has recently enhanced its software support commitments for newer devices. As of January 2024, the company pledged up to seven years of security updates and Android OS upgrades for select Galaxy devices. This new policy applies to premium flagships like the Galaxy S24 series. This is a substantial increase from the original five-year security and three-year OS update policy offered to the Galaxy S21 series.[security+1]
This extended support aims to provide users with a longer, more secure experience with their devices. It also addresses growing consumer demand for longer-lasting smartphones. However, this extended policy does not retroactively apply to older models like the Galaxy S21. The Galaxy S21 FE, which launched nearly a year after the original S21 models, will continue to receive monthly security updates for a longer period.[sammobile+1]
The end of regular updates for the Galaxy S21 series highlights the importance of understanding a device's support lifespan. Users should consider the security implications when deciding whether to keep an older smartphone. Upgrading to a newer model with extended support offers peace of mind and continued protection in an ever-changing digital landscape.
