The situation when you connect to an important video conference, but cannot hear a word of what your colleagues are saying, is one of the most stressful in remote work. The problem with the lack of audio in the application Zoom on devices running Android can arise for many reasons: from accidentally pressing the “mute” button to system Bluetooth conflicts or outdated drivers.
In this article we will analyze in detail all possible scenarios why the sound disappeared and offer step-by-step algorithms for recovery audio communications. We will look at both the settings within the application itself and the system parameters of your smartphone that may block audio transmission.
Restoring audio functionality often requires a comprehensive approach. Sometimes simply switching the audio source is enough, while in other cases you will need to completely reinstall the application or reset the network settings. Let's start with the most obvious and common reasons.
Quick check of the conference interface
The first thing to do when you detect silence on the air is to check the controls directly in the conference window. Often, users accidentally click on the microphone or speaker icon while actively gesturing or moving the device.
At the bottom of the screen you will see a toolbar. Find the speaker icon. If there is a red line next to it or it looks crossed out, then the sound is muted by software. Click on it to activate the audio stream. Also make sure that your microphone is not in Mutemode if the interlocutors cannot hear you.
Sometimes the problem lies not in global muting, but in choosing the wrong output device. Click on the arrow next to the sound icon (if it is available in your version) or simply tap on the icon to see a pop-up menu for selecting a source.
- 🔊 Check if the “Computer Audio Only” mode is activated if you are connected to a PC in parallel.
- 📱 Make sure that the media volume on the device itself is not turned down to zero adjustment buttons.
- 🎧 Turn off the headset if it is connected but not in use, so that the sound goes to the phone speaker.
⚠️ Attention: In some versions of the application, the speaker icon may be hidden in the “More” menu (three dots) if your smartphone screen has a low resolution or is used in horizontal orientation.
Configuring audio sources in the Zoom menu
If a simple button does not help, you need to delve into the audio conference settings. The application Zoom allows you to flexibly control where the sound comes from and where it is transmitted. This is especially true for modern smartphones that support multiple audio channels.
Go to the conference settings by clicking on the “More” button or the gear icon if you are the organizer. Find the section responsible for audio. The option “Use internet for audio” may be available here. Make sure it is active, as calling over a cellular network (Call Me / Call In) may not work if there is no balance or a poor signal.
It is also worth checking the “Automatically adjust volume” setting. This function, designed to equalize the sound levels of different speakers, sometimes does not work correctly on certain models Samsung or Xiaomi, drowning out quiet interlocutors to the point of complete inaudibility. Try disabling this option.
Important The parameter is the choice of connection mode. If you're using a corporate account, your administrator may have limited your audio connectivity to VoIP only. In this case, the phone call button will be inactive, and you will have to rely solely on the quality of the Internet connection.
Android system settings and permissions
The operating system Android has a complex system for managing permissions for applications. If Zoom does not have rights to use a microphone or audio output, the sound will not work, even if everything is turned on inside the application.
Go to the settings of your smartphone: Settings → Applications → Zoom → Permissions. Make sure the switch next to Microphone is active. Without this right, the application will neither transmit nor correctly process the incoming audio stream in some scenarios.
Also check the audio settings on the system. Sometimes the sound profile switches to "Mute" or "Vibrate", which affects media content, including calls in instant messengers. Increase the “Media” or “Ring Volume” slider in the notification shade.
| Resolution type | Status | Impact on operation |
|---|---|---|
| Microphone | Allowed | Critical for two-way communication |
| Telephone | Allowed | Needed for calls via a cellular network |
| Notifications | Allowed | Important for sound notifications about entry |
| Storage | Optional | Needed for recording meetings |
If you recently updated Android to a new version (for example, from 12 to 13), check the permissions again - the system may have reset them for security reasons.
Pay attention to the Do Not Disturb function. In newer versions of Android, this feature can block application sounds, even if they are service applications. Add Zoom to exceptions or temporarily disable this mode.
Problems with Bluetooth and external devices
One of the most insidious reasons for the lack of sound is an active but not physically connected Bluetooth device. The smartphone may “think” that the sound should go to wireless headphones that are in the bag or are discharged, and remain silent through the speaker.
Check the top of the screen or the notification shade. If you see a headphone or headset icon, the audio channel has been redirected. Turn off Bluetooth completely during the conference or select “This device” in the playlist.
Sometimes the A2DP and HFP profiles become out of sync. In this case, the music can play, but the interlocutor’s voice cannot. Try to “forget” the device in the Bluetooth settings and connect it again after starting the conference.
⚠️ Attention: If you are using a car headset, make sure that the car's Bluetooth connection settings allow the transfer of media audio, and not just phone calls.
For users of headsets with active noise reduction, sometimes temporarily disabling this helps functions. Aggressive noise reduction algorithms may misclassify the other person's voice as background hum and cut it out.
Battery optimization and background work
Android power saving systems often aggressively “kill” background processes to save battery. If Zoom runs in the background or the screen goes dark, the system may limit network activity or access to audio codecs.
Go to Settings → Applications → Zoom → Battery. Select "No restrictions" or "Do not optimize" mode. This will prevent the sound from cutting out when you lock the screen or switch to other applications.
It is also worth checking if the “Traffic Saving” mode is enabled. Although this has a greater impact on video, in some cases the compression of the audio stream can be so strong that the audio becomes unintelligible or disappears altogether.
☑️ Power saving diagnostics
If you have a third-party memory cleaner or antivirus installed, make sure that it does not block the application’s network activity during a call. Add conference calling to the white list of such apps.
Updating the application and resetting settings
Outdated version of the client Zoom may contain bugs that are incompatible with new versions of Android. Developers regularly release patches that correct sound problems on specific device models.
Go to Google Play Market, find the application and click the “Update” button if it is active. If the update does not help, try clearing the application cache: Settings → Applications → Zoom → Storage → Clear cache.
In extreme cases, a complete reinstallation will help. Delete the application, restart your smartphone and download Zoom again. This will reset all possible software conflicts and return the settings to factory settings.
⚠️ Attention: Before deleting the application, make sure that you remember your username and password or have access to your email to restore your account, so as not to lose contacts and meeting history.
What to do if reinstallation did not help?
If even a clean installation did not solve the problem, it may be a conflict in the Android system libraries. Try resetting your network settings (Wi-Fi, Bluetooth, mobile data) in your phone's general settings. This will not delete your personal data, but will return your network settings to their original state.
Remember that interfaces and menu names may vary slightly depending on the manufacturer of your smartphone (Huawei, Oppo, Realme) and shell version. The logic of actions remains the same, but the paths may vary.
Frequently asked questions (FAQ)
Why can I hear myself, but not other participants?
Most likely, the problem is on the side of the interlocutors (their microphone is turned off) or you have selected the wrong audio output (for example, to a non-existent Bluetooth device). Check the audio output settings in Zoom.
Can I turn on the sound if I joined the conference by phone?
Yes, if the organizer allows entry by phone. You need to select the “Call Me” option or call the number provided in the invitation and enter the conference code. The sound will go through a regular telephone network.
There is sound, but it is very quiet and intermittent. What to do?
This is a sign of a poor Internet connection. Try switching from Wi-Fi to mobile data or vice versa. Also turn off video in the conference settings to free up the channel for high-quality audio.
How to make the sound louder than the maximum system level?
There is no such setting in the application itself. However, you can try to enable the "Absolute Volume" function in the Android developer menu or use third-party sound amplifier applications, but this may lead to distortion.
In 90% of cases, the sound problem is solved by switching the output source (Bluetooth/Speaker) or checking the system permissions for the microphone.