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

Quality Test

Face recognition • Purpose: Check whether the face recognition sensor is working. • How to check: Look at the screen. • Provided information ‒ Status: View whether the feature is working normally. ‒ FAQ: View frequently asked questions. To test this feature, your face must be registered.

Wired headphones • Purpose: Check whether the headphone jack recognizes the headphones normally. • How to check:

1) Connect headphones to your device. 2) Tap Play and listen for the sound. 3) Answer the question using the buttons. • Provided information ‒ Status: View whether the feature is working normally. To test this feature, you must connect headphones.

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