How to diagnose issues with the microphone of the HUAWEI Vision

1. Go to All apps > Optimizer on the HUAWEI Vision.

2. In Optimizer, go to Smart Diagnosis > Microphone.

3. Select Agree in the displayed dialog box and then select Start.

4. If the test detects any faults, perform the following operations to troubleshoot:

• Restart the device and check whether the fault is rectified.
• Check for system updates in Settings > System > Software update on the HUAWEI Vision.
• Restore the HUAWEI Vision to its factory settings in Settings > General > Advanced > DISABLE > Reset (this will erase your personal data).

5. If the test result is normal, select Done to end the test. You can click More services in the upper right corner to dial the hotline or scan the QR code on the screen to get technical support.