One UI 9 makes major lock screen security change every Galaxy user needs to know

Samsung has implemented a significant security change for devices shipping with the One UI 9 interface. Users should be aware that the threshold for failed lock screen attempts has become much stricter. If you enter an incorrect PIN, password, or pattern 13 times, your smartphone will trigger a permanent lock, requiring a full factory reset to restore access.

This update is designed to stop brute-force attacks where unauthorized parties attempt to guess credentials through repeated tries. The new policy introduces a tiered lockout system that begins after five unsuccessful attempts. From that point, the wait time grows progressively longer with each mistake, starting at one minute and extending to 24 hours after the 12th failed entry. Once you reach the warning threshold, the device clearly displays the number of attempts remaining.

It is important to note that this policy currently applies only to devices that ship with One UI 9 preinstalled, such as the Galaxy Z Fold 8, Z Fold 8 Ultra, and Z Flip 8. Devices that update to this version of the software from an older OS are not currently subject to this specific 13-attempt permanent lockout rule. Still, Samsung advises all users to maintain awareness of their backup credentials.

Even if you rely primarily on biometric security like fingerprints or face recognition, Android will periodically prompt for your secondary password or PIN. Because these methods are essential for accessing the device after a restart or prolonged period, forgetting them under the new, stricter guidelines could result in losing your data. Ensuring you know your backup PIN is now a critical part of maintaining your digital security on newer hardware.