Difficulty
Moderate
Steps
14
Time Required
5 - 20 minutes
Sections
2
- How to Install the Self Repair Assistant App
- 4 steps
- How to Calibrate an Optical Fingerprint Sensor
- 10 steps
Flags
1
In Progress
This guide is a work in progress. Reload periodically to see the latest changes!
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Introduction
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 app
- 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.
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.
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Step 2
Install the app
- 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.
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.
Step 3
Rename the app
- 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.
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.
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.
Step 5
Open the Self Repair Assistant app
- Open the Self Repair Assistant app.
Open the Self Repair Assistant app.
Step 6
Agree to the terms and conditions
- Select “Agree” to accept the Terms and Conditions.
Select “Agree” to accept the Terms and Conditions.
Step 7
Select the procedure
- 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.
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
Begin the fingerprint sensor calibration
- Select “Start” to begin the fingerprint sensor calibration.
- Once the screen turns black, select “Start” again.
Once the screen turns black, select “Start” again.
Step 9
Apply the white box
- 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.
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.
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.
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
Apply the black box
- 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.
Place the black box over the outline near the bottom of the screen.
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.
Use your finger to press down on the black box.
Step 13
Apply the small white box
- 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.
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.
Use your finger to press down on the small white box.
Continue pressing until “Done” appears at the top of the screen.
You may need to reset your device for the calibration to apply.
Your optical fingerprint sensor is calibrated and ready for use.
If the calibration fails for any reason, repeat the calibration procedure.
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Alex Diaz-Kokaisl
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Pierre Ehab - Aug 9, 2022
Reply
When I open the app after installation I get this toast message “this model is NOT supported”
My device is a Galaxy A71
neskagu nikomu - Aug 19, 2022
Reply
When I open the app after installation I get this toast message “this model is NOT supported” My device is a Galaxy A52
Alex Diaz-Kokaisl - Aug 22, 2022
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.
Salem Ekwuribe - Sep 13, 2022
Reply
It showed not supported for this model… What should i do next
Maa Kali - Sep 22, 2022
Reply
Sir reset a phone please start up sensor finger please request
