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

Quality Test

3 Tap Test all . The device performs a test on all items. When the test is finished, you can check the test results. • Tick mark: Working normally • Exclamation mark: Needs further inspection • The test proceeds automatically, but you may need to follow the on-screen instructions depending on the test item. Keep an eye on the screen during testing to ensure smooth progress. • If the exclamation mark appears on any test items after finishing the test, tap them to find the solutions. If the problem persists, visit a Samsung Service Center.

Test Items NFC

• Function: Check whether your device can read near field communication (NFC) tags that contain information about products. • Provided information ‒ Status: View whether the feature is working normally.

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