Depending on your model and region, there are two primary ways to access calibration software: 1. The Samsung Self-Repair Assistant (Recommended)
New glass has different light transmission properties (for optical sensors) or acoustic impedances (for ultrasonic sensors). Calibration tunes the sensor to "see" through the specific piece of glass installed. How to Access the Calibration Tool samsung fingerprint calibration tool
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 . Depending on your model and region, there are