While One UI 8.5 has yet to see a wide release, Samsung is already forging ahead with the development of One UI 9. Beyond the anticipated visual tweaks, recent leaks suggest the tech giant is testing a profound security upgrade that could fundamentally alter how Galaxy devices operate.

Analysis of recent test builds reveals that Samsung plans to integrate the Memory Tagging Extension (MTE) directly into the system. Notably, users may be able to toggle this feature via the Auto Blocker app. This marks a significant shift, as such advanced diagnostic tools were previously buried deep within developer settings.

MTE is a hardware-level security mechanism built into next-generation ARM processors. It actively monitors how applications allocate memory, sniffing out abnormal access and blocking invalid actions. This effectively shields devices against system crashes, data leaks, and internal vulnerabilities.

While MTE operates quietly in the background, it plays a critical role in system stability. By monitoring memory in real-time, it mitigates app crashes and exploitation—historically a major weak point in mobile ecosystems.

However, the upgrade comes with a few caveats. Samsung notes that enabling MTE could slightly impact overall performance, and users will likely need to reboot their devices for the changes to take effect. Furthermore, the feature is inextricably tied to ARM v9 hardware, meaning only the latest generation of Galaxy smartphones will support it.

Unlike Samsung's established Knox platform, which primarily defends against external threats, MTE is designed to police the internal workings of the device's memory. Moving this capability to the user-facing Auto Blocker signals Samsung's ambition to democratize advanced security. If rolled out officially, MTE could be one of One UI 9’s most impactful—if invisible—upgrades.