People can't hear you on calls with your Pixel Buds Pro 2, voice memos record silence, or one bud's mic seems dead while the other works fine. This is usually a settings issue, not a hardware defect, and you can sort it out in a few minutes.
The single quickest fix is checking which microphone your buds are using. Open the Pixel Buds app on your Android phone, go to Sound > Microphone, and look at the current selection. If it's set to Automatic, try switching it to Left or Right manually. Test with a quick voice memo, and if one side sounds crystal clear while the other doesn't, leave it on the good side for now.
Clean the Microphone Openings
Each Pixel Bud Pro 2 has a small microphone grille on the bottom of the stem. A flashlight will reveal it, a tiny mesh circle. Earwax, pocket lint, or skin oil builds up there over time and muffles your voice. The mic still works, just very quietly.
Use a clean, dry, soft-bristle brush (a fresh toothbrush works great) and gently sweep across the mesh. Don't poke anything sharp into it, you'll puncture the diaphragm. If there's stubborn buildup, press a piece of sticky tape gently against the mesh to lift residue without pushing it deeper.
Check App Microphone Permissions
The buds may be sending audio fine and the app you're using simply doesn't have mic permission. On Android, go to Settings > Apps > See all apps > find the app (Phone, WhatsApp, Zoom, etc.) > Permissions > toggle Microphone on. If you're using the Pixel Buds app on iOS, check Settings > Privacy > Microphone and make sure the app is enabled.
Also, if the issue only shows up in a single app after a recent update, that app may have lost mic access silently during the update.
Force Restart Your Phone
Stuck audio routes can happen on any phone. On a Pixel or most Android phones, press and hold the Power button and Volume Up button simultaneously for about 10 seconds until the device restarts. On an iPhone, use the standard force restart (Volume Up, Volume Down, hold Side button until Apple logo).
After the reboot, take the buds out of the case and place a test call. The audio route should reset cleanly.
Reset the Pixel Buds Pro 2
If the mic still misbehaves, a factory reset clears out any internal state mismatch between the buds, the case, and your phone. Put both buds in the charging case and leave the lid open. Press and hold the pairing button on the back of the case for 30 seconds. The LED on the front will flash orange after about 30 seconds, then turn white when it's done. Release the button.
After the reset, forget the buds in your phone's Bluetooth settings and pair them fresh through the Pixel Buds app. This re-establishes a clean Bluetooth profile and fixes most persistent mic glitches.
Test the Mic in Voice Recorder First
If the problem only happens in specific apps like Zoom or WhatsApp, test the mic with the built-in Voice Recorder or Recorder app (Google's Pixel Recorder app is excellent). If the recoding sounds clear, the buds' hardware is fine, and the issue is with the third-party app's audio settings. Reinstall that app or check its in-app audio device picker.
For a quick codec diagnostic, try a Google Duo or FaceTime call (if on iOS). FaceTime uses high-quality AAC both ways, while a regular phone call drops to mono HFP. If Duo sounds clean and regular calls don't, you're hearing the codec switch, not a mic failure.
On a Computer, Set the Right Input Device
When you connect Pixel Buds Pro 2 to a laptop or PC for calls, the system must use the Bluetooth Hands-Free Profile for the microphone. That profile forces audio into mono and reduces quality on both sides, making your voice sound distant. That's normal behavior, not a broken mic.
On macOS, open System Settings > Sound and set both Input and Output to Pixel Buds Pro 2. On Windows, go to Settings > System > Sound, set Input and Output to Pixel Buds Pro 2 (Hands-Free) for the call. After the call, switch Output back to Pixel Buds Pro 2 (Stereo / A2DP) for music, otherwise everything stays in mono.
Update the Firmware
Google ships firmware updates for the Pixel Buds Pro 2 silently through the Pixel Buds app. The buds update automatically when they're in the case, the case is charging, and your phone is nearby with the app running. To check your firmware version, open the Pixel Buds app, tap the gear icon, scroll to Firmware version.
If you're behind, keep the buds in the case, plug the case in via USB-C or place it on a Qi charger, and leave your phone unlocked next to them. An update can take 30 minutes to an hour to download and install. After it finishes, test the mic again.
Avoiding Conversation Detection Triggers
Pixel Buds Pro 2 have a Conversation Detection feature that automatically pauses audio and switches to transparency mode when it hears you speaking. The feature uses the microphones to detect speech. If it's triggering from coughs or laughter (a known issue), it can make the mic seem unresponsive during calls because the buds are flipping modes. Try turning Conversation Detection off in the Pixel Buds app under Sound > Conversation Detection and test if the mic behavior improves.
If the mic still fails after a reset, cleaning, and firmware update, and one specific bud reliably can't record while the other works fine, that bud likely has a hardware mic issue. Pixel Buds Pro 2 come with a one-year limited warranty, so contact Google or the retailer you bought them from for a replacement.
