This is the most common tool used for optical sensors.
⚠️ for most Samsung models (S9 and newer). Attempting software-only calibration will fail or brick the sensor.
If not calibrated, your phone may fail to register fingerprints, or the fingerprint option might completely disappear from the settings menu.
2. Built-In Android System Calibration (Smart Switch / Device Care Integration)
While Samsung does not release the calibration tool to the public, some developers have created apps, such as "Samsung Fingerprint Calibration" tools found on specialized repair forums (like XDA Developers). Note that these require deep technical knowledge and often root access. How to Fix Fingerprint Issues Without Special Tools
Calibration is crucial in specific scenarios:
Some high-end aftermarket suppliers now sell screens that have been pre-calibrated using the official Samsung tool before shipping. They provide a calibration certificate with the IMEI of the phone. This is the easiest path for DIY repairers.
Yes, PC-based software like is an excellent alternative if your device isn't supported by the official app. It includes a dedicated fingerprint calibration tool.
These require the optical calibration tool and software mentioned above.