Android 15 can automatically delete your face or fingerprint unlock if they
 

• Strings in the latest Android 15 beta suggest the OS can automatically delete biometrics that arent working well.
• Android will delete your face or fingerprint unlock when they arent working well and then prompt you to set them up again.
• We dont know how the OS determines when a biometric isnt working well or if this feature is even live yet in the latest Android 15 beta, though.

Most Android phones, even really cheap budget phones, sport some kind of biometric authentication method, whether that be through a fingerprint scanner or facial recognition. However, the accuracy of these sensors can vary drastically between devices due to differences in the sensor technology, the exact part thats used, the specific tuning done by the vendor, and even the environmental conditions of the user. Internet forums are littered with users complaining about their phones biometrics, and one of the most common recommendations to fix biometric authentication issues is to re-enroll their fingerprint or face. The upcoming Android 15 release might proactively help users re-enroll their poorly performing biometrics.

While digging through the latest Android 15 beta, I discovered new strings in the OS framework that suggest that Android will automatically detect when your face or fingerprint models arent working well, delete them, and then prompt you to set them up again. Android 15 will show a notification saying that your face or fingerprint model “wasnt working well and was deleted. Set it up again to unlock your phone” with your face or fingerprint. Since Android only lets you enroll a single face, the notification thats shown for re-enrolling your face will be slightly different than the one shown for re-enrolling your fingerprint, but theres no functional difference. Here are the strings in question:




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