How to troubleshoot the microphone of your Galaxy phone when it does not recognise a voice well

During a call, if the outgoing sound is too low, or if the voice commands for Bixby or Google Assistant are not recognised well, follow the guide below to check.

Before you try out the recommendations below, be sure to check if your device's software and related apps are updated to the latest version. To update your mobile device's software, follow these steps: 

Step 1. Go to Settings > Software update.

Step 2. Tap on Download and install.

Step 3. Follow the on-screen instructions.

1. Make sure nothing is blocking the microphone

The phone may not be able to recognise your voice well if the microphone hole is blocked by foreign objects such as an attachable protective cover or a protective film placed on the phone before purchase. The microphone is located at the bottom of your phone. Make sure that no foreign matter is blocking the microphone hole and try again after removing anything you find.

Microphone hole location.

2. Restart your phone

Restarting may simply solve your problem. After restarting, check the outgoing sound while calling or try a voice command for Bixby or Google Assistant. Follow the steps below to restart your phone.

Step 1. Swipe down from the top of your phone’s screen to open the Quick panel.

Step 2. Tap the Power icon, and then tap Restart.

Reboot device.

Step 3. If the phone restarts normally, check if the same problem still occurs.

3. Start your phone in Safe mode

Try using the microphone in safe mode. If there is no problem in Safe Mode, it may be a problem caused by an installed third-party app on your phone. To find which app is causing the issue, you can try uninstalling the apps in the order of the last installation.

Step 1. Open Quick settings. Tap the Power icon at the top of the screen.

Step 2. Touch and hold Power off until the Safe mode icon is displayed.

Step 3. Tap Safe mode. If you've entered Safe mode successfully, you will see Safe mode displayed at the bottom of the screen.

Safe mode.

Note: Device screenshots and menus may vary depending on the device model and software version.

Step 4. When your phone is in safe mode, try making a call or using the microphone in another app. If you have no problems with the microphone in Safe Mode, it means that the problem is caused by an app.

4. Check microphone permissions

Step 1. Open the Settings app

Settings app icon

Step 2. Tap on Privacy

Privacy selected in Settings menu

Step 3. Make sure the switch next to Microphone access is toggled on

Switch next to Microphone access selected in Privacy settings

5. Check there are no Bluetooth audio devices connected

If you have a Bluetooth audio device connected, your phone may be using the microphone on this device rather than the phone’s own microphone.

To check whether there are any Bluetooth devices connected:

Step 1. Swipe down from the top of the screen

Step 2. Press and hold the Bluetooth symbol

Bluetooth icon selected in Settings panel

Step 3. Tap the cog symbol next to any connected devices

Cog next to Galaxy Buds selected in Bluetooth menu

Step 4. Check whether the switches next to Calls and Audio are toggled off

Switches next to Calls and Audio selected in Galaxy Buds Bluetooth settings

Use the Samsung Members app to test the microphone

Samsung Members allows you to run diagnostics tests to check that your phone is functioning correctly. 


Step 1. Open the Samsung members app

  Samsung Members icon

Step 2. Tap Support

Support selected in Samsung Members

Step 3. Tap View tests

View tests selected in Samsung Members

Step 4. Tap Mic. You may be prompted to grant the app permission to record audio. If this is the case, tap While using the app or Only this time

Mic selected in Samsung Members diagnostics

Step 5. Tap Record.

Record selected in Mic diagnostics test

Step 6. Once the recording is complete, tap Play

Play selected in Mic diagnostics menu

Step 7. If you could hear the sound, tap Yes. If you couldn’t hear the sound, tap No

Buttons displaying Yes and No in Mic diagnostic

Step 8. Repeat the steps for the second microphone

Step 9. If you are able to hear the recordings from both microphones, it means that the microphone issues you are having are caused by software problems

If you are experiencing difficulties with your Samsung mobile, tablet, or wearables, you can send us a question in the Samsung Members app.

This allows us to take a closer look at what is happening. The data is anonymised and only held for the duration of the investigation. Find out more about sending an error report through the 'How to use the Samsung Members app'.

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