Why do I have no sound when screen mirroring?

Check Your Device Connections

One of the most common reasons for having no sound when screen mirroring is that your devices are not properly connected. Here are some tips for troubleshooting your connections:

Make sure your phone/tablet and TV or streaming device are connected to the same WiFi network. You may need to disconnect and reconnect to the network on both devices.

If you are using Bluetooth to connect your phone to a speaker or headphones, check that Bluetooth is enabled on both devices and that they are paired. Try disconnecting and re-pairing the Bluetooth connection.

For wired connections, check that the HDMI or other video/audio cables are fully plugged in on both ends. Try unplugging and reinserting cable connections.

You may also want to reboot your devices by turning them off and back on, which can reset connections. Overall, carefully re-checking and re-establishing connections between your screen mirroring devices is an important first step.

Verify Sound Settings

One of the most common reasons for no sound when screen mirroring is that the sound settings are not properly enabled on either the streaming device or the receiving device. To fix this:

First, confirm that sound is turned on for both the device you are streaming from and the TV or external display you are mirroring to. On your phone, tablet, or laptop, check that the volume is turned up and not muted. On your TV or display, make sure the volume is up and mute is off.

Also check that any other connected audio devices like speakers or soundbars are powered on and have volume. If you are mirroring to a projector, ensure the projector volume is up and audio output is enabled.

Next, go into the sound settings on both devices and ensure audio output is configured correctly. On mobile devices, check that the media volume slider is turned up and the ringer/silent switch is not enabled. On the receiving device, choose the correct audio input or output mode.

Finally, use the volume controls during mirroring to raise or lower sound. There may be different volume levels set for each device. Checking both places ensures sound is fully enabled.

Update Your Apps

One common cause of no sound when screen mirroring is having outdated apps. Make sure mirroring apps like AirPlay are up-to-date on both your iPhone/iPad and TV:

On your iPhone or iPad:

• Go to the App Store. Click the profile icon.
• Scroll down to view a list of apps with upcoming updates.
• Click ‘Update’ to have the latest app version. [1]

It’s also important to keep your iPhone, iPad, or Android device OS up-to-date. Go to Settings > General > Software Update to check for and install the latest iOS or Android OS version.

This ensures mirroring apps are optimized for the latest device software and prevents audio issues from arising. Keeping everything updated is an easy first troubleshooting step for no sound when casting your screen.

Restart Devices

Sometimes, simply restarting both the streaming and receiving device can fix sound issues when screen mirroring. Here are the steps:

1. Completely power down the device you are streaming from (your phone, tablet, or computer). Turn it off and then back on again.
2. Also power down the device you are streaming to (your TV or monitor). Unplug it from power, wait 30 seconds, then plug it back in and turn it on.
3. Once both devices have fully restarted, try reconnecting and screen mirroring again. Go into your streaming app and select the receiving device again to mirror your screen.
4. With both devices rebooted and reconnected, check if sound is now working properly when screen mirroring. Often a simple restart and reconnection will resolve intermittent audio issues.

Restarting refreshes the connection and resets any software errors that may be preventing sound from working correctly. If you find the audio problem persists after restarting both devices, you may need to investigate other potential issues.

Try Different Cables

If you are mirroring your screen using a wired connection, the issue may be with your cables. Try testing out different HDMI, USB-C, or other cables to see if that resolves the no sound issue.

Make sure the cables you are using are not defective, damaged, or extremely old. Using low-quality or faulty cables can lead to problems with both video and audio transfer during screen mirroring. Purchase and test out a new, high-quality HDMI or USB-C cable to see if that fixes your sound problem.

Keep in mind the version and specs of the cable as well. For example, older HDMI cables may not support audio transfer well. Using an HDMI cable version 2.0 or higher is recommended for mirroring to a TV or monitor. The cable connectors should also fit snugly into your devices, without feeling loose.

If after trying multiple cables you find one that allows audio to come through properly during screen mirroring, you’ve likely isolated the issue being with a faulty or incompatible cable. Stick with using that working cable for a smooth mirroring experience going forward.

Check App Permissions

One common reason for no sound when screen mirroring is that the mirroring app lacks permission to access media or audio on your device. To fix this:

On an Android device, go to Settings > Apps > Select the mirroring app > Permissions, and make sure it has permission enabled for Storage and Microphone access. Grant these permissions if they were previously disabled.

On an iPhone or iPad, go to Settings > Select the mirroring app > Enable Microphone access. Also check Files and Folders or Photos access depending on the app.

Mirroring apps like the built-in Smart View on Samsung devices or third-party apps like AirScreen need microphone, media, and storage permissions in order to transmit audio along with video during screen mirroring. If any of these permissions are disabled, it can cause loss of sound.

Re-enabling the necessary permissions for the mirroring app you are using can often resolve “no sound” issues when screen mirroring. Make sure the app has access to media files and microphone input on your device.

Reset Network Settings

One troubleshooting step to try is resetting your network settings on your mobile device. This clears out any problematic network settings that could be interfering with screen mirroring and sound. According to iMobie, on your iOS device open Settings > General > Reset and tap on Reset Network Settings.

After resetting network settings, you’ll need to reconnect to your WiFi network and re-enter any custom network settings. The benefit of this approach is that it clears out any problematic cached network settings that may be causing mirroring issues without fully resetting the device. Just be sure to reconnect to your preferred WiFi afterwards so you can try screen mirroring again with a clean slate of network settings.

Factory Reset Device

As a last resort, you may need to backup and factory reset the problematic device causing the no sound issue during screen mirroring. Before taking this drastic step, be sure to try all other troubleshooting methods first.

Factory resetting will erase all data and settings on the device and restore it to original factory condition. This can resolve software issues that may be interfering with proper audio output during screen mirroring.

To factory reset, go into your device settings, find the reset option (often in General > Reset), and choose the full factory reset. You’ll need to re-download any apps and reconfigure settings after resetting.

Once the device has been reset, attempt to re-enable screen mirroring and test for audio. With software conflicts now cleared, sound may properly pass from the device to the TV or streaming box.

If factory resetting still does not resolve the no sound problem, then the issues may be hardware-related and you’ll need to contact device support or consider replacement.

Contact Support

If you have tried all of the troubleshooting steps and are still experiencing no sound when screen mirroring, it’s time to reach out to support.

Contact the manufacturer of your devices and the developers of any relevant apps. Provide detailed information about the devices you are using, the apps involved in the screen mirroring, the cables and connections, and the steps you have already taken to resolve the issue. Mention any error messages you have received during the process.

When you contact support, have your devices on hand so you can walk through troubleshooting with the agent. Be ready to provide the make and model numbers of your devices. If screen mirroring was working previously but then stopped working, note when it stopped working and any changes made to the device settings around that time.

Support agents may have you reset network settings, reboot devices, reinstall apps, or try safe mode. If it is determined your hardware may be malfunctioning, you may need to send your device in for repair or replacement under warranty.

Getting help directly through official support channels is the best way to resolve tricky technical issues like screen mirroring problems. Support agents have access to the latest troubleshooting guides and expertise to help get your devices communicating properly.

Consider Hardware Issue

If no sound persists after trying all other troubleshooting steps, the issue may be due to a hardware problem with your device or TV. Faulty components like the headphone jack, internal speaker, HDMI port, or audio cables could prevent sound from being transmitted properly during screen mirroring.

For example, a damaged headphone jack may incorrectly switch all audio output to that port rather than to the TV speakers. An internal speaker that is blown out or disconnected won’t transmit sound signals. If the HDMI or audio cables connecting your device and TV are faulty, they may not be able to carry the audio signal between devices.

If you’ve ruled out software, network, and settings issues, getting your device or TV repaired may be necessary to restore sound when screen mirroring. Since sound relies on multiple hardware components working together properly, determining the exact issue would require diagnosis by a repair technician. But if it’s a hardware problem, repair or replacement of the faulty parts is typically needed to permanently fix the no sound problem.