Fingerprint Calibration Tool Link - Samsung

If the option to add a fingerprint is missing from your settings menu entirely, the phone has likely failed its "Power-On Self-Test" (POST) for the sensor. Re-running the calibration tool can often "wake up" the hardware. Verdict: Can You Do It Yourself?

Samsung Fingerprint Calibration Tool: A Complete Guide If you’ve recently replaced the screen on your Samsung Galaxy device, you might have encountered a frustrating "Fingerprint sensor needs calibration" error. Because modern Samsung phones use sophisticated under-display sensors (either optical or ultrasonic), the hardware must be digitally aligned with the new display panel to function securely. samsung fingerprint calibration tool

The tool will flash a series of images or patterns on the phone screen. The sensor reads these patterns to map the glass surface. If the option to add a fingerprint is

Ensure there is no dust, oils, or screen protectors on the device. Calibration must be done on the bare glass. Samsung Fingerprint Calibration Tool: A Complete Guide If

On some older models or specific firmware versions, you can access internal testing tools via the dialer: Open the app. Dial *#0*# . Tap on Sensor .