If the above doesn't work, you can run an official diagnostic to see if the hardware is physically broken.
: If you encounter errors, first ensure both your finger and the screen area are clean and free of oils or screen protector debris. Are you currently seeing a "Fingerprint calibration required" error on your device, or are you preparing for a DIY repair samsung fingerprint calibration tool
Depending on your model and region, there are two primary ways to access calibration software: 1. The Samsung Self-Repair Assistant (Recommended) If the above doesn't work, you can run