iPhone videos without sound usually happen for one of two reasons. The audio is in the video but will not play, or the phone never recorded any audio. Most causes are software-level and fixable in under a few minutes. Start with the quick diagnosis below to find out which type of problem you have, then follow the relevant set of fixes.
Step 1: Determine Whether It’s a Playback or a Recording Problem
Before trying any fix, first identify the exact problem. Using recording fixes for a playback problem only wastes time and creates more confusion.
How to check:
-
Open the silent video in the Photos app and press play.
-
Press the volume-up button to raise the output fully while the video plays.
-
Then open a second video you know has sound and test it at full volume.
What your results mean:
-
The problem video is silent, but other videos play normally: The video file likely contains no audio track. This is a recording problem. Skip to the recording fixes section below.
-
All videos are silent, or audio cuts out across everything: Audio exists in the file, but something is blocking playback. Continue to the playback fixes section.
Getting this right means you go straight to the fixes that apply to your situation.
Step 2: Fix Playback Problems When Your iPhone Video Has No Sound
Follow these in order. Each one takes less than a minute to check.
Check the Silent Switch and Media Volume
If your iPhone has a Ring/Silent switch, make sure Silent mode is off. The orange color should not be showing.
On newer iPhones with an Action button, such as iPhone 17, check that Silent mode is not turned on.
Silent mode normally only mutes calls and alerts, not video audio. Even so, turning it off can help rule out software or app problems. If raising the media volume brings the sound back, you likely do not need any more fixes.
Disconnect Bluetooth Devices
If AirPods, a Bluetooth speaker, or any other Bluetooth audio device is paired and connected, your iPhone is routing all audio to that device rather than its built-in speaker. The video appears silent because the sound is playing somewhere else.
-
While the video is playing, open Control Center.
-
Tap the Audio Output (AirPlay) button and make sure iPhone is selected as the audio output.
You can also go to Settings > Bluetooth and disconnect any active device from there.
Play the video again once audio is routed back to the iPhone speaker.
Check if Audio Was Stripped During Editing
If the video was edited in iMovie before you noticed the silence, the audio may have been muted or removed during that process.
In iMovie: Open the project, tap the video clip in the timeline, and look for the yellow waveform beneath it. Tap the speaker icon below the clip and check that the volume slider is not set to zero. Adjust and re-export.
If the waveform is completely absent rather than just muted, the audio was stripped and saved over. It cannot be recovered from that file.
Step 3: Fix Recording Problems When Your iPhone Recorded a Video Without Sound
If the video has no audio track, the microphone was either not working or something blocked it while you recorded the video. Work through these fixes before assuming the hardware is damaged.
Grant Microphone Access to Your Camera App
This is one of the most common causes of silent video recordings, particularly when a third-party app was used. iOS requires every app to receive explicit microphone permission. If that permission is off, the app records video with no sound and will not warn you.
How to check:
-
Open Settings.
-
Go to Privacy & Security > Microphone.
-
Find the app you used to record (Camera, Instagram, TikTok, or any other) and confirm the toggle is switched on.
If it was off, enable it, record a short test clip, and play it back.
Previously recorded silent videos cannot be salvaged. The audio was never captured. Going forward, confirm permission is on before your next recording.
Enable Microphone Audio Before Screen Recording
Screen recording on iPhone does not capture your voice by default. This is different from standard camera recording and is the reason many screen recordings have video but no spoken audio. The microphone must be activated manually before each session.
How to do it:
-
Open Control Center.
-
Long-press the Screen Record button (the circle with a dot inside).
-
A panel opens with a microphone option at the bottom. Tap the microphone icon so it highlights and shows as active.
-
Tap Start Recording.
This setting does not save between sessions. You need to repeat this step every time you start a new screen recording.
Check for Physical Microphone Blockage
The iPhone has multiple microphone grilles:
-
Bottom grille: The small holes flanking the Lightning or USB-C port. This is the primary microphone for video recording.
-
Rear pinhole: A small opening near the rear camera module used to capture ambient audio during filming.
Common causes of blockage include a phone case covering one of the grilles, a finger resting over the bottom grille during recording, or accumulated lint and debris inside the holes.
Remove the case and test a recording. Inspect both grilles under good lighting. Use a dry, soft-bristle brush to gently clear any visible debris. Avoid water, sharp tools, or compressed air held at close range. Record a short test clip after each step to isolate which grille was the issue.
Software-Level Fixes Worth Trying
If the earlier steps did not fix the problem, try these common software fixes one at a time.
-
Force-restart your iPhone.
-
On iPhone 8 and later (including iPhone 17 Series): Press and release volume up, press and release volume down, then hold the side button until the Apple logo appears.
-
On iPhone 7: Hold volume down and the side button together.
-
On iPhone 6s and earlier: Hold the Home button and the side button together. After the restart, record a test clip.
-
Install the latest iOS update. Go to Settings > General > Software Update. Known audio bugs are patched in point releases. Install any available update and test again.
-
Reset All Settings. Go to Settings > General > Transfer or Reset iPhone > Reset > Reset All Settings. This resets system preferences (including permission states, display settings, and network settings) to their defaults without deleting any photos, apps, or personal data. You will need to reconnect to Wi-Fi networks and manually re-grant app permissions after this step. Re-enable microphone access, then record a test clip.
What to Do If Your iPhone Microphone Is Damaged
If every fix above has failed, a hardware fault is the likely explanation.
How to confirm it is hardware:
Open the Voice Memos app and record a 10 second clip. Play it back and listen for sound. If you hear nothing, the main microphone may not be working. Next, cover the bottom microphone with your finger and record another clip. Some iPhone models may switch to a different microphone when the bottom one is blocked. If that second clip picks up audio but the first does not, the bottom grille component is the issue. If both are silent across multiple apps, hardware damage is probable rather than a software glitch.
At this point, contact Apple Support or visit an Apple Genius Bar. Home repair of microphone components is not recommended and may affect your device’s warranty or structural integrity.
For users who need a working recording solution before or instead of a repair, an external microphone that connects directly to the iPhone bypasses the built-in microphone entirely. The Hollyland LARK A1 connects via a compact Lightning or USB-Creceiver with no Bluetooth pairing and no app setup required. It records audio without relying on the iPhone's built-in mic. This makes it a good temporary fix for microphone damage and a reliable choice if you record videos often.
Frequently Asked Questions
Why does my iPhone video have no sound even though I recorded it normally?
Which app you used can explain why your iPhone recorded a silent video. Third-party apps need mic permission before they can record audio. Open Settings > Privacy & Security > Microphone and confirm the app is allowed. If you recorded with the Camera app, check the mics instead. Software problems or hardware damage can also stop audio recording. The Camera app does not use a separate microphone permission. If the video has no audio track, that sound cannot be restored.
Why does my iPhone screen recording have no audio when I speak?
If your voice is missing from an iPhone screen recording, the microphone was off when recording began. Open Control Center and press and hold the Screen Record button. Tap Microphone until it shows On, then record again. Check the mic before recording if you are not sure. If your voice is missing from an existing recording, you cannot add it later because it was never recorded.
Can I add audio back to an iPhone video that was recorded silently?
No. If audio was never recorded, the data does not exist and cannot be recovered. You can add background music or a recorded narration afterward using iMovie, but the original ambient sound from the recording moment is permanently gone. The fix is to confirm microphone access before your next recording.
How do I test if my iPhone microphone is actually broken?
Start by making a short recording in the Voice Memos app. Speak normally near the bottom edge of your iPhone. Listen carefully to check whether your voice sounds normal. After that, record a rear camera video while talking. Then make another video with the front camera instead. Remove any phone case before testing the microphones again. Clear away dirt from each microphone opening if needed. Also, confirm microphone access for any third-party recording apps. If every recording still sounds silent or badly distorted, hardware damage is likely. Contact Apple Support or visit an Apple Store or Apple Authorized Service Provider for inspection and repair.
Conclusion
Begin by checking the mute switch and media volume. After that, confirm the app has microphone permission. Next, make sure nothing is covering the mics. Then force restart your iPhone and install the latest iOS update. If the issue still continues, try Reset All Settings last. If every software fix fails and Voice Memos confirms the mic is silent, Apple Support is the right next step for hardware diagnosis. If you need reliable audio now, an external mic like the Hollyland LARK A1 ensures clean capture regardless of the state of the built-in microphone.
