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

Quality Test

Mobile network • Function: Check whether your mobile network is working normally. • Provided information ‒ Status: View whether the feature is working normally. ‒ Settings: Configure your mobile network settings. ‒ FAQ: View frequently asked questions. Sensors • Function: Check whether the sensors are working normally. • Provided information ‒ Status: View whether the feature is working normally. ‒ Sensor types: View the status of each sensor.

Proximity recognition • Function: Check whether the proximity recognition feature is working normally. • Provided information ‒ Status: View whether the feature is working normally. ‒ FAQ: View frequently asked questions.

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