Fix Sound or Video Call Problems
A community question thread about the most common Google Duo call failures — no sound, no picture, or a call that will not connect — and the fixes members have tried on Android and iOS devices.
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How do I fix sound or video call problems on Google Duo?
Call problems in Google Duo usually fall into three groups: the other person cannot be heard, the other person cannot be seen, or the call will not connect at all. Checking each group in order helps narrow the cause quickly, because a single setting — such as a muted microphone or a disabled camera permission — can break both audio and video at once.
Before you start
- Confirm the call connects at all and that you hear the ring or connection tone.
- Check that the phone is not on silent or on a Bluetooth device you are not listening to.
- Restart the Google Duo app and, if needed, the phone itself.
- Make sure the app and your phone system are up to date.
When there is no sound
- Unmute the microphone using the on-screen control during the call.
- Raise the in-call volume slider, then check the phone's own media volume.
- Move away from headphones or speakers that were left connected to the device.
- On Android, if the phone volume worked previously and stopped, re-check the media and call volume sliders and any paired Bluetooth output.
When there is no video
- Tap the camera switch control to return to the rear or front camera as needed.
- Allow camera and microphone access for the app in your phone's permission settings.
- Close other apps that may be using the camera or microphone at the same time.
- On a TV or shared device, check that the app is installed from the Play Store and that the external camera and microphone are attached and selected.
When the call will not connect
- Check your internet connection and try a different network, such as mobile data instead of Wi-Fi.
- Confirm you are signed in to the account you expect to call from.
- Re-enter or refresh the contact details, then retry the call.
- Update the app and the phone system software, then try again.
Members on Android and iOS devices share their own fixes in the comments below. If a step worked for you, add a reply with your device model and app version so others can compare notes.
Still stuck?
Browse related threads in the Android section for device-specific reports such as microphone and volume problems, or ask a new question with your device model, the Duo version, and the exact symptoms you see.
Have a call problem to report?
Post your question and describe the device, the app version, and what you hear or see. Other members will share the steps that worked for them.
Ask A QuestionSymptom to starting point
Use the table to jump straight to the first thing worth checking for your symptom.
| Symptom | Check first | Where to read more |
|---|---|---|
| Other person cannot be heard | Microphone mute control and in-call volume | Audio questions |
| Other person cannot be seen | Camera switch control and app permissions | Video questions |
| TV or shared device has no mic | External USB mic and camera selection | Android |
| Call fails to connect | Network type, app and system updates | General questions |