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Galaxy S25 Calibrations

After completing a repair on your Galaxy S25 series device, calibrating the replaced components ensures proper performance and sensor accuracy. The Self Repair Assistant app makes it easy to run the required calibrations for parts like the screen, battery, speakers, and more. This guide will help you understand when calibrations are necessary, how to perform them correctly, and what tools or steps may be needed to complete the process.
Hands holding a Galaxy S25 Ultra with a finger tapping the Self Repair Assistant app icon.
Hands holding a Galaxy S25 Ultra with a finger tapping the Self Repair Assistant app icon.

Galaxy S25 Calibrations

Note
To ensure accurate calibrations after repair, visit a Samsung Service Center or purchase calibration equipment from Samsung's website if needed. If any malfunctions occur during calibration, contact a Samsung Service Center—additional charges may apply for issues caused by improper repair.

Used parts and calibration functions in supported models

Used parts and calibration functions in supported models

The calibration functions are automatically conducted based on the selected parts.

Cal.

Screen

Battery

Back Glass

Charging Port

Speaker

Optical Fingerprint Calibration

Yes

No

No

No

No

Range Sensor Calibration

Yes

Yes

Yes

Yes

Yes

Battery Cycle Resets

No

Yes

No

No

No

Speaker Calibration

Yes

No

No

No

No

Touch Screen Panel Calibration

No

No

No

No

Yes

Under-display Camera Calibration

Yes

No

No

No

No

Digital Hall Sensor Calibration

Yes

No

No

No

No

Note
  • Depending on the model, the screen module may include a battery. When the screen module is replaced, the battery also must be selected and a battery cycle reset must be performed.
  • In Fold models, touch screen panel calibration is performed for both the main and cover screens.
  • Digital Hall sensor calibration is only for Fold and Flip models, and under-display camera calibration is only for Fold models.
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Using the Self Repair Assistant App

Using the Self Repair Assistant App
1

Download the Self Repair Assistant app from the Galaxy Store.
Note

For US devices, the APK file must be installed manually. If the Auto Blocker function (available from Android OS 14) is turned on, you cannot install APK files manually through the My Files app.
Security and privacy screen with Auto Blocker highlighted on the Galaxy S25 Ultra.

In this case, open Settings, tap Security and privacy > Auto Blocker, and turn off the switch.
Auto Blocker turned on in Security and privacy settings on the Galaxy S25 Ultra.

2

Launch the Self Repair Assistant app.

Blue and white app icon showing a wrench over a gear with the text Self Repair Assistant below it. 

3

Read the Privacy Notice and tap Continue.
Note
  • If you're not signed in to your Samsung account, a sign-in button will appear.
    Self Repair Assistant screen with a Sign in button.
  • If you select the link to read the full Privacy Notice, you will be directed to our site.
    Self Repair Assistant screen with a Continue button.
4

Check permissions and tap Continue.

Self Repair Assistant screen showing a highlighted box listing Camera and Notifications permissions, with a Continue button below. 

5

Select the part you have replaced and tap Next.

Calibration selection screen showing Display and Battery options checked and highlighted, with a Next button below. 

Note
  • The required calibrations will be conducted automatically.
  • If the device does not have certain components or sensors associated with the replaced part, the corresponding calibration will be skipped automatically.
6

Read the on-screen instructions and tap Start.

Optical fingerprint sensor calibration screen showing a highlighted instruction box and Start and Skip buttons. 

Note
Refer to Optical Fingerprint Sensor Calibration, Resetting the Battery Cycle Count, Range Sensor Calibration, Touch Screen Panel Calibration, Speaker Calibration, Under-display Camera Calibration (Fold Models Only), and Digital Hall Sensor Calibration (Fold and Flip Models Only) for more information.
7

Check the results of each calibration item:

  • Completed: Calibration was successful.
  • Failed: Calibration failed.
  • Skipped: Calibration was skipped.

Calibration results screen showing Battery and Display sections with Completed highlighted for all items.

8

On the calibration results page, tap Close to exit the app. Restart your device to complete the calibration process.

Calibration results screen showing completed Battery and Display checks, and a highlighted text box with a Close button below. 

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Optical fingerprint sensor calibration

Optical fingerprint sensor calibration

Whenever the screen is replaced, the optical fingerprint sensor must be calibrated to ensure optimized performance on supported models.

Optical fingerprint sensor calibration is available through the Self Repair Assistant app.

Note
  • This feature may not be available on all models. The Self Repair Assistant app will confirm availability.
  • You will need three calibration tools: the white calibration box, black calibration box, and the 3D fingerprint dummy rubber.Three rubber calibration tools shown on a gray background labeled White calibration box, Black calibration box, and 3D fingerprint dummy rubber.
1

Launch the Self Repair Assistant app.
2

Tap Display, and then tap Next.

Calibration selection screen with Display checked and highlighted, and a Next button below. 

Note
  • The required calibration items will be processed automatically.
  • If the device does not have certain components or sensors associated with the part that has been replaced, relative calibration will be skipped automatically.
3

Check the part and calibration, then tap Start.

Optical fingerprint sensor calibration screen with Display highlighted and a Start button below. 

4

Read the on-screen instructions and tap Start.

Optical fingerprint sensor calibration screen showing a highlighted instruction box and Start and Skip buttons. 

Note
The white calibration box must be ready before starting.
5

Place the white calibration box over the sensor area and press firmly with your finger. Tap Next while maintaining pressure until you see a success message.

Optical fingerprint sensor calibration screen showing instructions to Put the white calibration box on the sensor, a Next button, and a highlighted sensor graphic. 

Note
The bottom side of the rubber that is shaped like a square should be located on the square guide line.
6

Place the black calibration box over the sensor area and press firmly with your finger. Tap Next while maintaining pressure until you see a success message.

Optical fingerprint sensor calibration screen showing instructions to Put the white calibration box on the sensor, a Next button, and a highlighted sensor graphic. 

Note
  • The black calibration box must be prepared before you start.
  • The bottom side of the rubber that is shaped like a square should be located on the square guide line.
7

Place the 3D fingerprint dummy rubber over the sensor area and press firmly with your finger. Tap Next while maintaining pressure until you see a success message.

Optical fingerprint sensor calibration screen showing instructions to Put the 3D fingerprint dummy rubber on the sensor, a Next button, and a highlighted sensor graphic. 

Note
  • The 3D fingerprint dummy rubber must be prepared before you start.
  • The bottom side of the rubber that is shaped like a square should be located on the square guide line. (Do not place the pattern horizontally on the 3D fingerprint dummy rubber.)
8

Check the calibration result. If Completed does not appear, try again.

Calibration results screen showing Optical fingerprint sensor calibration as Completed, and a Close button below. 

Read less

Resetting the battery cycle count

Resetting the battery cycle count

The battery cycle count should be reset whenever your device’s battery is replaced.

1

Launch the Self Repair Assistant app.
2

Select the part that you have replaced. Tap Battery, and then tap Next.

Calibration selection screen showing Battery checked and highlighted, with a Next button below. 

3

Check part and calibration and tap Start.

Battery calibration start screen showing Battery initialisation and Range sensor calibration listed, with a Start button below. 

4

Tap Start.

Battery initialisation screen with Start and Skip buttons below. 

5

Read the on-screen instructions and tap Scan to scan the QR code, or tap Enter manually to enter the serial number manually.

Confirm new battery screen showing two highlighted sections for QR code with a Scan button, and Serial number with an Enter manually button. 

6

Scan the QR code or enter the serial number that appears on the battery package. The reset will begin.

Screen split into two sections showing a camera viewfinder with a QR code, and a text entry field for Battery serial number. 

7

Check the calibration results.

Calibration results screen showing Battery initialisation and Range sensor calibration as Completed. 

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Range sensor calibration

Range sensor calibration

When replacing screens, batteries, back glasses, or charging ports, range sensor calibration is required to ensure the range sensors of devices equipped with them are optimized.

Range sensor calibration is available through the Self Repair Assistant app.

Note
Some content may vary depending on region, service provider, model, or software version.
1

Launch the Self Repair Assistant app.
2

Select the part that you have replaced and tap Next.

Calibration selection screen showing Back glass checked and highlighted, with a Next button below. 

3

Check part and calibration and tap Start.

Back glass Range sensor calibration start screen showing a highlighted text box with Start button below. 

4

Read the on-screen instructions and tap Start.

Camera range sensor calibration screen showing a highlighted instruction box regarding dark room calibration, with Start and Skip buttons below. 

5

Place the phone face-down in a dark area and press the Volume button.

Camera range sensor calibration screen showing instructions for placing the phone face-down to begin calibration. 

6

The calibration will perform automatically. A tone will play when calibration is complete.

Camera range sensor calibration screen showing a Calibrating progress indicator and instructions for dark room calibration. 

7

Check the calibration result.

Calibration results screen showing Back glass Range sensor calibration as Completed. 

Read less

Touch screen panel calibration

Touch screen panel calibration

When replacing screens, touch screen panel calibration is required to ensure accurate touch input.

Touch screen panel calibration is available through the Self Repair Assistant app.

Note
In the Fold models, touch screen panel calibration is performed for both the main and cover screens.
1

Launch the Self Repair Assistant app.
2

Select the part that you have replaced and tap Next.

Calibration selection screen showing Display checked and highlighted, with a Next button below. 

3

Check part and calibration and tap Next.

Display calibration options screen showing Touch screen panel calibration highlighted, with a Next button below. 

4

Read the on-screen instructions and tap Start.

Touch screen panel calibration screen showing a highlighted red text box with instructions, and Start and Skip buttons below. 

5

The calibration will perform automatically and the screen will turn white during calibration.

Blank white screen. 

6

Check the calibration result.

Calibration results screen showing Touch screen panel calibration and Range sensor calibration completed. 

Read less

Speaker calibration

Speaker calibration

When replacing speakers, the speaker must be calibrated to guarantee optimized speaker performance for devices that have it.

Speaker calibration is available through the Self Repair Assistant app.

1

Launch the Self Repair Assistant app.
2

Select the part that you have replaced and tap Next.

Calibration selection screen showing Speaker checked and highlighted, with a Next button below. 

3

Check part and calibration and tap Next.

Speaker calibration selection screen showing Speaker calibration highlighted, with a Next button below. 

4

Tap Start.

Speaker calibration screen with Start and Skip buttons. 

5

The calibration will perform automatically.

Speaker calibration screen showing a Calibrating progress indicator. 

6

Check the calibration result.

Calibration results screen showing Speaker calibration as Completed. 

Read less
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