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?
Always back up your phone before running calibration tools, as they sometimes require a factory reset or "Repair Mode." samsung fingerprint calibration tool
Ensure there is no dust, oils, or screen protectors on the device. Calibration must be done on the bare glass. If the option to add a fingerprint is
Follow the on-screen prompts to "register" the new hardware. 2. The Hidden Service Menu Always back up your phone before running calibration
In the past, this was a proprietary tool available only to authorized technicians. However, with the rise of movements and Samsung’s partnership with sites like iFixit, the software has become more accessible to DIY enthusiasts. Why is Calibration Necessary?