Samsung is cracking down on lock screen security with its upcoming One UI 9 update, and the changes are dramatic enough that every Galaxy user should pay attention. According to SamMobile, the Android 17-based software will drastically reduce the number of incorrect unlock attempts allowed before a device becomes permanently locked. Once a user enters the wrong PIN, password, or pattern for the thirteenth time, the phone will be completely locked down and can only be restored through a factory reset — meaning all data stored on the device would be erased.
The new system introduces escalating lockout periods designed to frustrate anyone attempting to guess their way into someone else’s phone. Temporary lockouts begin after the fifth failed attempt with a one-minute wait, then climb steadily through five minutes, fifteen minutes, thirty minutes, ninety minutes, four hours, twelve hours, and finally twenty-four hours after the twelfth mistake. Samsung says this graduated approach is specifically aimed at stopping brute-force attacks, where bad actors repeatedly try different combinations to break into a stolen or borrowed device. To help users avoid accidentally triggering these penalties, One UI 9 will display how many attempts remain once the warning threshold is reached, and entering the identical wrong credential multiple times will only count as a single failed try.
There are some important caveats worth noting. Anyone who relies primarily on fingerprint or facial recognition to unlock their phone might want to take a moment to memorize their backup credentials. Android requires users to enter their PIN, password, or pattern periodically — such as after a restart or every seventy-two hours — so forgetting those details could eventually leave no option but a full factory reset. There’s also an open question about accidental inputs from a phone bouncing around in a purse or backpack, though Samsung’s existing accidental touch protection may help mitigate that risk.
Perhaps the most surprising detail is which phones will actually be affected. The stricter policy only applies to devices that ship with One UI 9 preinstalled rather than older models that simply receive the update. As of now, that list includes the Galaxy Z Fold 8, Galaxy Z Fold 8 Ultra, and Galaxy Z Flip 8. Interestingly, SamMobile tested the One UI 9 beta on the Galaxy S26 and found it does not include these tighter restrictions, leaving some uncertainty about whether Samsung plans to expand the policy more broadly down the road.