When people say they cannot hear you during a phone call, the issue usually points to a microphone problem. Your Galaxy S25 Ultra may still receive audio clearly, but your voice does not reach the other person. This can happen because of blocked microphones, software glitches, or incorrect settings in One UI 7.
The good news is that most microphone issues are easy to fix once you know where to look.
Why People Cannot Hear You on the Galaxy S25 Ultra
- The microphone opening is blocked by dust, dirt, or a phone case.
- Temporary software glitches affecting the microphone.
- Microphone permissions are disabled for the Phone app.
- Bluetooth devices are interfering with the call audio input.
- A faulty third party app is using the microphone in the background.
Check the Microphone Openings
Your phone has multiple microphones that help capture your voice clearly during calls. If any of these openings are blocked, your voice may sound faint or completely silent to the person on the other end.
Inspect the bottom edge of your Galaxy S25 Ultra, and then locate the small microphone hole beside the charging port.
Use a soft brush or a wooden toothpick, and then gently remove any visible dust or debris.
Restart Your Phone
Temporary system glitches can interrupt how the microphone communicates with the calling service. Restarting your phone refreshes system processes and often restores normal microphone operation.
Swipe down from the top right of the screen, and then tap the Power icon.
Tap Restart, and then wait for the phone to boot back up.
Check App Microphone Permissions
If microphone permission is disabled for the Phone app, your device may struggle to transmit audio during calls. Ensuring the permission is enabled allows the phone to access the microphone properly.
Open Settings, and then tap Apps.
Find and tap Phone, and then tap Permissions.
Tap Microphone, and then select Allow.
Disconnect Bluetooth Devices
Sometimes your phone routes call audio through a connected Bluetooth device without you noticing. If that device has a poor microphone or is too far away, callers may not hear you.
Swipe down from the top right to open Quick Settings, and then tap the Bluetooth icon.
Turn Bluetooth off temporarily, and then make another test call.
Test the Microphone With Voice Recorder
Testing the microphone helps confirm whether the hardware is working properly. If your voice records clearly, the problem likely comes from the calling app or a system setting.
Open the Voice Recorder app, and then tap the Record button.
Speak normally for a few seconds, and then stop the recording to play it back.
Boot Into Safe Mode
Some third party apps can interfere with microphone functions. Safe Mode starts your Galaxy S25 Ultra using only essential system apps, which helps determine whether another app is causing the issue.
Swipe down from the top right, and then tap the Power icon.
Press and hold Power off, and then tap Safe mode when the option appears.
If people can hear you normally in Safe Mode, an installed app is likely causing the problem.
Microphone issues on the Samsung Galaxy S25 Ultra often come from simple things like blocked openings, Bluetooth interference, or permission settings. Once you check these areas, your calls should sound clear again.
FAQs
Where is the microphone located on the Galaxy S25 Ultra?
The main microphone is located on the bottom edge of the phone near the charging port. Additional microphones may be placed around the frame to help with noise cancellation during calls.
Why can people hear me on speaker but not on a normal call?
This usually indicates that one microphone is blocked or malfunctioning. Speaker mode may switch to a different microphone that still works properly.
Can a phone case block the microphone on the Galaxy S25 Ultra?
Yes, some thick or poorly designed cases may partially cover the microphone opening. Removing the case during a test call can help confirm if it is causing the problem.
