How to Calibrate an Optical Fingerprint Sensor

Written By: Alex Diaz-Kokaisl

Comments: 16

How to Calibrate an Optical Fingerprint Sensor

Difficulty

Moderate

Steps

Time Required

5 - 20 minutes

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.

Step 1

Download the Self Repair Assistant 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.

Step 2

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.

It says model not supported

kayceegovender24 -

Step 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.

Step 4

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.

Su s20 con one ui 5.1 viene fuori il messaggio di aggiornare l app

_matti_ -

Step 5

Open the Self Repair Assistant app.

Is not opened

nasir Khan -

This app fails to open says model not supported

Jim Donnellon (Truman) -

Step 6

Select "Agree" to accept the Terms and Conditions.

App open nhi ho raha hai

Shahid Ansari -

In galaxy a31 it doesn't work

Yuvraj Singh -

Step 7

Select the "Display" icon.
Select "Continue" at the bottom of the screen.
If you want to perform a battery cycle reset instead, follow this guide.
Select "Start" to begin the fingerprint sensor calibration.

Step 8

Select "Start" to begin the fingerprint sensor calibration.
Once the screen turns black, select "Start" again.

Step 9

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.

Where do i get the white box?

Cocoa Tea (cocoa tea) -

Hi there.

Currently, the only way to get the boxes is by purchasing the Galaxy Tab S7+ Screen kit. Samsung intends to sell them separately at some point. This guide is only for the Galaxy Tab S7+ at the moment.

Alex Diaz-Kokaisl -

Step 10

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 "Calibrating" disappears.

Step 11

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.

Step 12

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 "Calibrating" disappears.

Step 13

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.

Step 14

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 "Done" appears at the top of the screen.
You may need to reset your device for the calibration to apply.