Samsung Boosts Security for Galaxy Z Fold and Flip Series with February 2026 Update

Samsung continues to demonstrate its commitment to device longevity and user safety by rolling out the latest security enhancements for its premium foldable lineup. Owners of the 2022 and 2023 flagship foldables are now receiving a vital software refresh designed to fortify their devices against modern digital threats. This rollout ensures that even as newer models enter the market, the previous generations remain at the cutting edge of protection.

Comprehensive Protection for Premium Foldables

The latest software package is specifically targeting the Galaxy Z Fold 5, Galaxy Z Flip 5, Galaxy Z Fold 4, and Galaxy Z Flip 4. This February 2026 security patch is not just a routine update; it is a comprehensive fix that resolves 37 distinct security issues identified within the Android OS and Samsung’s proprietary software layer. By applying this update, users can significantly reduce the risk of unauthorized access and system exploits.

Regional Availability and Firmware Details

As is standard practice for Samsung, the update has first appeared in its home market of South Korea. Users in this region are reporting the arrival of new firmware versions tailored to each specific hardware model. The specific build numbers identified are F946NKSS6FZB2 for the Fold 5, F731NKSS6FZB2 for the Flip 5, F936NKSS7IZB2 for the Fold 4, and F721NKSS7IZB2 for the Flip 4.

While the rollout is currently concentrated in Korea, history suggests that Samsung will expand this availability to international markets, including North America, Europe, and Asia, within the next few days. Global users are encouraged to stay vigilant and check their system settings frequently to ensure they receive the update as soon as it hits their respective carriers or regions.

Preparing for One UI 8.5

Beyond immediate security concerns, this update serves as a stable foundation for the next major software leap. All four foldable models mentioned are eligible for the highly anticipated One UI 8.5 update. Samsung is expected to begin the deployment of this feature-rich interface in the coming weeks, promising new AI capabilities and interface refinements tailored for the foldable form factor.

Which Samsung foldable models are included in this update?

The February 2026 security update is currently rolling out for the Galaxy Z Fold 5, Galaxy Z Flip 5, Galaxy Z Fold 4, and Galaxy Z Flip 4.

How many security vulnerabilities does this patch fix?

This specific patch addresses 37 security issues, improving the overall safety and privacy of the devices.

When will the update be available outside of South Korea?

While it typically starts in Korea, Samsung usually expands the rollout to other countries and regions within a few days of the initial release.

How can I manually check if the update is ready for my phone?

You can check for the update by navigating to your device's Settings, selecting Software update, and then tapping Download and install.

Will these foldable phones receive the One UI 8.5 update?

Yes, the Galaxy Z Fold 5, Flip 5, Fold 4, and Flip 4 are all eligible for One UI 8.5, which is expected to launch in the near future.

🔎 Keeping your device updated is the single most effective way to protect your personal data and ensure your hardware runs smoothly. As Samsung prepares to transition these foldables to the next version of One UI, this security patch provides the peace of mind needed to enjoy your premium device without compromise. If you haven't received the notification yet, keep checking your settings, as the global rollout is imminent.