Check these first
Do not assume the cause from the symptom alone. First determine whether the issue affects the whole phone, one app, one connection, or one accessory. Work from low-impact checks toward recovery or repair.
- Record and play back your voice with the built-in recorder
- Compare a normal call, speakerphone, front-camera video, and rear-camera video
- Remove any case or protector that may cover a microphone opening
Critical diagnosis for this symptom
Compare calls, recording, video, and speakerphone to identify the affected microphone path.
Do not insert sharp objects into microphone openings.
Escalate with device, OS, error, and reproduction details when the issue persists after restart, controlled comparison, and update checks, or when physical damage, abnormal heat, account suspension, or carrier provisioning is suspected.
Narrow down the cause
| Scope of the issue | Where to check next |
|---|---|
| Only one app is affected | Check app permissions, updates, storage, cache, and reinstall options |
| The whole phone is affected | Check restart, system updates, free storage, and system settings |
| Other devices have the same issue | Check the network, service, charger, or accessory |
| The issue began after a drop or liquid exposure | Avoid repeated power or charging attempts and contact official support |
See the troubleshooting flow
Safe step-by-step process
Complete one step at a time and test after each change. Do not change several settings at once.
- 1Disconnect Bluetooth headsets and select the phone microphone as the input source.
- 2Open app permissions, confirm microphone access, toggle it off and on, and test again.
- 3Remove the case and inspect microphone openings for surface debris. Do not insert sharp tools.
- 4Compare the built-in recorder, front video, rear video, and calls to identify which microphone path fails.
- 5Restart and update the phone and app. If only calls fail, also check network quality and call-processing settings.
- 6If several built-in functions cannot record audio, verify your backup and request official diagnostics or repair.
Actions to avoid
- Pushing needles or cotton swabs deep into microphone openings
- Repeatedly reinstalling an app before checking permissions
- Relying on the untested phone for an important call or meeting
Prevent the issue from returning
- Make a short test recording after fitting a new case
- Review microphone permissions after major system updates
Frequently asked questions
What if my screen looks different?
Menu names and locations vary by OS, manufacturer, model, region, and software version. Use the Settings search field and check the manufacturer guide for your exact model.
When should I stop troubleshooting?
Stop as soon as the issue is fixed. Change one setting at a time so you can identify what solved the problem and reverse it if necessary.
What should I do if the issue remains?
Record how to reproduce it, verify your backup, and contact the manufacturer, carrier, or app provider most closely related to the problem.