Samsung Fingerprint Calibration Tool Official
If you have ever replaced a broken screen on a high-end Samsung Galaxy device (like the S21, S22, S23, S24, or Note series) or swapped out a damaged battery, you have likely encountered the dreaded "Fingerprint sensor not working" error. The sensor might register a fingerprint, but it refuses to unlock the phone, or worse, the option disappears from Settings entirely.
: The tool flashes bright lights and captures how they bounce off these blocks through the new glass. It measures the exact thickness and transparency of your new screen. samsung fingerprint calibration tool