Hearing that people can't hear you on calls while using AirPods, or finding that your phone is picking up audio from the wrong microphone, is a common issue that spans both iPhone and Android users. In most cases, the fix is in your device settings rather than a hardware problem with the AirPods themselves.
Your device defaulting to the phone's built-in microphone instead of the AirPods' microphone is one of the most common causes, since some apps or call settings don't automatically switch microphone input when AirPods connect. AirPods that have a dirty or blocked microphone grille, particularly if dust or earwax has accumulated around the microphone opening, can significantly reduce pickup quality on calls. Low or depleted AirPod battery levels also affect microphone performance, since the microphone is one of the first features to degrade under low battery. Software bugs in iOS following an update occasionally cause AirPod audio routing to behave incorrectly.
Start by checking which microphone your iPhone is set to use during calls. On iPhone, go to Settings > Bluetooth, tap the information icon next to your AirPods, and look at the "Microphone" setting. Ensure it is set to "Automatically Switch AirPods" or explicitly to "Always Left AirPod" or "Always Right AirPod" rather than being forced to an inactive earbud or an unexpected default.
Clean the microphone grilles on your AirPods gently using a dry, soft-bristled brush, such as a clean toothbrush or the brush that came with your AirPods cleaning kit. The microphone openings are small and accumulate debris quickly, especially from regular daily use, which physically reduces how much sound they pick up.
Check AirPod battery levels. If either AirPod is below 20 percent charge, put them back in the case for 15 minutes and charge them before testing the microphone again, since low battery is a documented cause of reduced microphone sensitivity.
Disconnect and reconnect your AirPods. On iPhone, go to Settings > Bluetooth, tap the information icon next to your AirPods, and select "Forget This Device." Then reconnect them by opening the AirPod case near your phone. This re-establishes the Bluetooth connection profile and often resolves microphone routing issues introduced by a previous glitch.
Update your AirPods firmware by keeping them in their case near an iPhone connected to WiFi and plugged into power. AirPod firmware updates install automatically in the background and often include fixes for microphone and call audio behavior.
Test the AirPods microphone outside of calls by using Voice Memos on iPhone to record a short audio clip. If the recording sounds clear, the hardware is fine and the issue is app-specific or call routing-specific rather than the AirPods themselves.
Avoid blocking the small microphone openings on the stem of your AirPods with phone cases, fingers, or clothing while on calls, since even partial physical obstruction noticeably reduces the microphone's ability to pick up your voice clearly.
If the microphone sounds muffled
mustang303 on calls despite cleaning the grille, reconnecting the AirPods, and correct microphone settings, one AirPod may have a hardware microphone failure, particularly if it was dropped or exposed to moisture. Apple Support can test this and arrange a replacement if the AirPods are under warranty or AppleCare coverage.
Most AirPods microphone call issues trace back to microphone settings on your phone, dirty grilles, or low battery, all quick to check and fix before considering a hardware replacement.
