Repair guide Galaxy S21 (SM-G991B) - English - Rev.1.0

Calibrations

Under-display Camera Calibration (Fold Models Only) Whenever the screen is replaced, the under-display camera must be calibrated to guarantee optimized under-display camera performance for devices that have it. Under-display camera calibration is available through the Self Repair Assistant app. This feature may not be available depending on the model. The availability of this feature can be automatically checked in the Self Repair Assistant app, so please follow the guidance of the Self Repair Assistant app. 1 Launch the Self Repair Assistant app. 2 Select the part that you have replaced and tap Next .

3 Check part and calibration and tap Next .

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