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Introduction

Follow this guide to calibrate the in-screen optical fingerprint sensor in your Samsung phone or tablet. You should perform the calibration whenever you replace the screen, to ensure that the fingerprint sensor is accurate and secure.

This calibration procedure currently only works for the Tab S7+'s optical fingerprint sensor. This guide will update as Samsung adds more compatibility. For more information, check out the Samsung Self-Repair document.

You'll need the Samsung fingerprint sensor calibration toolkit in order to complete this procedure.

  1. How to Calibrate an Optical Fingerprint Sensor, Download the app: step 1, image 1 of 3 How to Calibrate an Optical Fingerprint Sensor, Download the app: step 1, image 2 of 3 How to Calibrate an Optical Fingerprint Sensor, Download the app: step 1, image 3 of 3
    • Download the Galaxy Cal app here.

    • You may be prompted with a "File might be harmful" warning. If so, select "Download anyway."

    • Open the "My Files" app.

    • Navigate to the "Installation files" tab on the left side of the screen.

  2. How to Calibrate an Optical Fingerprint Sensor, Install the app: step 2, image 1 of 3 How to Calibrate an Optical Fingerprint Sensor, Install the app: step 2, image 2 of 3 How to Calibrate an Optical Fingerprint Sensor, Install the app: step 2, image 3 of 3
    • Select the app on the right side of the screen.

    • If the app doesn't show up on this panel, skip to the next step.

    • Select "Install" to confirm the app's installation.

    • Skip the next two steps.

  3. How to Calibrate an Optical Fingerprint Sensor, Rename the app: step 3, image 1 of 3 How to Calibrate an Optical Fingerprint Sensor, Rename the app: step 3, image 2 of 3 How to Calibrate an Optical Fingerprint Sensor, Rename the app: step 3, image 3 of 3
    • If your app didn't show up on the "Installation files" tab, follow the next two steps to rename the file.

    • Navigate to the "Downloads" tab on the left side of the screen.

    • Long press the download file until an orange checkmark appears to the left of it.

    • Navigate to the bottom of the screen and select the "More" option.

  4. How to Calibrate an Optical Fingerprint Sensor: step 4, image 1 of 3 How to Calibrate an Optical Fingerprint Sensor: step 4, image 2 of 3 How to Calibrate an Optical Fingerprint Sensor: step 4, image 3 of 3
    • Select the "Rename" option.

    • Delete the .jar at the end of the app's name.

    • Your file should now appear in the "Installation files" tab.

  5. How to Calibrate an Optical Fingerprint Sensor, Open the Galaxy Cal app: step 5, image 1 of 2 How to Calibrate an Optical Fingerprint Sensor, Open the Galaxy Cal app: step 5, image 2 of 2
    • Open the Galaxy Cal app.

  6. How to Calibrate an Optical Fingerprint Sensor, Agree to the terms and conditions: step 6, image 1 of 1
    • Select "Agree" to accept the Terms and Conditions.

  7. How to Calibrate an Optical Fingerprint Sensor, Select the procedure: step 7, image 1 of 3 How to Calibrate an Optical Fingerprint Sensor, Select the procedure: step 7, image 2 of 3 How to Calibrate an Optical Fingerprint Sensor, Select the procedure: step 7, image 3 of 3
    • Select the "Display" icon.

    • Select "Start" to continue.

    • If you want to perform a battery cycle reset instead, follow this guide.

  8. How to Calibrate an Optical Fingerprint Sensor, Begin the fingerprint sensor calibration: step 8, image 1 of 2 How to Calibrate an Optical Fingerprint Sensor, Begin the fingerprint sensor calibration: step 8, image 2 of 2
    • Select "Start" to begin the fingerprint sensor calibration.

    • Once the screen turns black, select "Start" again.

  9. How to Calibrate an Optical Fingerprint Sensor, Apply the white box: step 9, image 1 of 3 How to Calibrate an Optical Fingerprint Sensor, Apply the white box: step 9, image 2 of 3 How to Calibrate an Optical Fingerprint Sensor, Apply the white box: step 9, image 3 of 3
    • Place the white box over the outline near the bottom of the screen.

    • Cover the outline with the side on the box that matches the pattern.

    • Make sure the white box completely covers the outline. Deviations could result in a "Fail" result or an inaccurate calibration.

  10. How to Calibrate an Optical Fingerprint Sensor: step 10, image 1 of 2 How to Calibrate an Optical Fingerprint Sensor: step 10, image 2 of 2
    • Use your finger to press down on the white box.

    • While pressing down, use your other hand to select the "Next" icon near the top of the screen.

    • Continue pressing until the "Loading. Please wait" disappears.

  11. How to Calibrate an Optical Fingerprint Sensor, Apply the black box: step 11, image 1 of 3 How to Calibrate an Optical Fingerprint Sensor, Apply the black box: step 11, image 2 of 3 How to Calibrate an Optical Fingerprint Sensor, Apply the black box: step 11, image 3 of 3
    • Place the black box over the outline near the bottom of the screen.

    • Cover the outline with the side on the box that matches the pattern.

    • Make sure the black box completely covers the outline. Deviations could result in a "Fail" result or an inaccurate calibration.

  12. How to Calibrate an Optical Fingerprint Sensor: step 12, image 1 of 2 How to Calibrate an Optical Fingerprint Sensor: step 12, image 2 of 2
    • Use your finger to press down on the black box.

    • While pressing down, use your other hand to select the "Next" icon near the top of the screen.

    • Continue pressing until the "Loading. Please wait" disappears.

  13. How to Calibrate an Optical Fingerprint Sensor, Apply the small white box: step 13, image 1 of 3 How to Calibrate an Optical Fingerprint Sensor, Apply the small white box: step 13, image 2 of 3 How to Calibrate an Optical Fingerprint Sensor, Apply the small white box: step 13, image 3 of 3
    • Place the side of the small white box with the grooves over the inner portion of the outline near the bottom of the screen.

    • Make sure the grooves on the box are vertical when placing it on the screen.

    • Make sure the white box completely covers the inner outline. Deviations could result in a "Fail" result or an inaccurate calibration.

  14. How to Calibrate an Optical Fingerprint Sensor: step 14, image 1 of 3 How to Calibrate an Optical Fingerprint Sensor: step 14, image 2 of 3 How to Calibrate an Optical Fingerprint Sensor: step 14, image 3 of 3
    • Use your finger to press down on the small white box.

    • While pressing down, use your other hand to select the "Next" icon near the top of the screen.

    • Continue pressing until "Success" appears at the top of the screen.

Conclusion

Your optical fingerprint sensor is calibrated and ready for use.

If the calibration fails for any reason, repeat the calibration procedure.

7 other people completed this guide.

Alex Diaz-Kokaisl

Member since: 01/16/2022

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5 Comments

When I open the app after installation I get this toast message "this model is NOT supported"

My device is a Galaxy A71

Pierre Ehab - Reply

When I open the app after installation I get this toast message "this model is NOT supported" My device is a Galaxy A52

neskagu nikomu - Reply

Hi there.

Unfortunately, as stated in the introduction, the only device supported right now is the Tab S7+ . Samsung plans to include more devices with time.

Alex Diaz-Kokaisl -

It showed not supported for this model... What should i do next

Salem Ekwuribe - Reply

Sir reset a phone please start up sensor finger please request

Maa Kali - Reply

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