Samsung Galaxy Z Fold 4 and Flip 4 Receive December 2025 Security Update
Samsung has initiated a software rollout for its 2022 foldable smartphones, the Galaxy Z Fold 4 and Galaxy Z Flip 4, delivering a significant security enhancement. This update brings the December 2025 security patch, which addresses a total of 57 security vulnerabilities, thereby fortifying the devices against potential threats.
Update Details and Availability
The update is currently being distributed in South Korea, with an expected expansion to other global regions in the coming days. The firmware package for the Galaxy Z Fold 4 is approximately 445.46 MB in size, identified by version F936NKSS6IYL1. For the Galaxy Z Flip 4, the update is around 426.82 MB and carries version F721NKSS6IYL1.
Users can check for the update manually by navigating to Settings > Software update > Download and install on their device. This proactive patch deployment is part of Samsung's ongoing commitment to providing extended security support for its flagship products.
Security and Future Software Roadmap
The primary focus of this update is security, with the December 2025 patch resolving dozens of vulnerabilities that could potentially be exploited. This ensures that user data and device integrity remain protected. It is noted that newer models in the Galaxy Z Fold and Z Flip series have already received this security patch.
Looking ahead, both the Galaxy Z Fold 4 and Galaxy Z Flip 4 remain eligible for Samsung's upcoming One UI 8.5 update. This future software version is anticipated to bring substantial visual refinements and new features, continuing to enhance the user experience on these foldable devices beyond core security maintenance.
Conclusion
The release of the December 2025 security update for the Galaxy Z Fold 4 and Flip 4 underscores Samsung's dedication to supporting its devices long-term. By promptly addressing security flaws, the company ensures these innovative foldables remain secure and reliable for users. Owners are encouraged to install the update as it becomes available to benefit from the latest protections.