If the sound is missing from your iPhone videos, it's most likely because Silent Mode was enabled or a software issue occurred. While it's impossible to recover the sound, there are several steps you can take to avoid this problem in the future. Here's how to troubleshoot if your iPhone videos have no sound.
If your iPhone videos are playing without sound, Silent Mode might have been on during recording. To check if the video was muted manually, open it and tap Edit. Ensure that the volume icon doesn't have a slash through it.
Steps to Resolve:
Unmute the video.

- Open the video in the Photos app.
- Tap Edit in the top-right corner.
- Tap the volume icon (it should not have a slash).
- Tap Done.
- Play the video again.
Check your volume buttons.

- If your device has a volume switch, ensure the orange side is not visible.
Turn off Bluetooth.

Disable Silent Mode.

- To disable, open the Control Center and make sure the Focus tile is not active.
Verify app permissions.

- Go to Settings.
- Tap Privacy & Security.
- Tap Microphone.
- Ensure the app is toggled on.
Restart your iPhone.

- Quickly press and release the top volume button.
- Quickly press and release the bottom volume button.
- Press and hold the side button until the Apple logo appears.
Check your microphone functionality.

- If playback is silent, the problem could be with your microphone. Consider cleaning it with a dry, soft-bristled brush.
- Alternatively, try recording with headphones that have a built-in microphone.
Switch to a different camera app.

- If the sound works fine on the other apps, the problem might lie with the Camera app itself. Close it and reopen it to refresh.
Update your device's software.

- Go to Settings.
- Tap General.
- Tap Software Update.
- Tap Download and Install.
Try listening on another device.

- If the videos play correctly, the issue is likely with your iPhone.
Reset your settings.

- Go to Settings.
- Tap General.
- Tap Transfer or Reset iPhone.
- Tap Reset.
- Tap Reset Network Settings.
