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C171 - How to fix no sound or bad audio quality on Avantree C171 when used with Samsung S24?

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If your Avantree C171 has no sound, distorted sound, crackling, or sound that cuts in and out on a Samsung Galaxy S24, try the steps below in order.

1

Unplug and Reconnect the C171

  1. Unplug the C171 from your phone.
  2. Wait 5 seconds.
  3. Plug the C171 firmly back into the USB-C port.
  4. Play music or a video and check the sound.
Important:
Make sure the USB-C plug is pushed in completely. A loose connection can cause no sound or poor audio.
2

Remove the Phone Case

Some phone cases can stop the USB-C plug from going in completely.

  1. Remove the phone case.
  2. Reconnect the C171 firmly.
  3. Test the sound again.
Also check the USB-C port.
Look for visible dust or debris. Do not put metal or sharp objects inside the port.
Still no sound?
Proceed to the next step.
3. Restart the Phone
  1. Unplug the C171.
  2. Restart your Samsung phone.
  3. Wait until the phone is fully on and unlocked.
  4. Plug the C171 back in.
  5. Test the sound again.
4. Check the Volume

Play music or a video first.

  1. Press Volume + on your Samsung phone.
  2. Make sure the Media volume is turned up.
  3. If the sound is still too quiet, increase the volume using the C171 controls.
5. Try Another App

Play music or a video from a different app.

Works in another app?
The C171 is connected correctly. Check the audio settings in the original app.
Same problem in every app?
Continue to the next step.
6. Test the C171 on Another Device

If possible, connect the C171 to another compatible USB-C phone, tablet, or computer.

Works on another device?
The issue may be related to your Samsung phone, its USB-C connection, or its software.
Same problem on another device?
The C171 may need further troubleshooting.

Still Need Help?

If the problem continues, please contact Avantree Support. Before submitting your request, please have the following information ready:

  • Your phone model, such as Galaxy S24, S24+, or S24 Ultra
  • Whether you have no sound, low volume, distorted sound, or sound cutting out
  • Whether removing the phone case helped
  • Whether restarting the phone helped
  • Whether the C171 works on another USB-C device

This information will help us find the cause faster.

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