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Dirty contacts are the #1 cause. Look at the bottom of each AirPod stem and inside the case at the magnetic charge points. You'll see small gold pins.
Cheap or counterfeit cables fail more than the case. Use a known-good Apple-branded MFi cable. Test in 2 different outlets.
If your case supports wireless charging (most do): place on a Qi pad. If wireless works but wired doesn't, your case's port is dead — replacement case is $99 from Apple.
Sometimes the firmware gets stuck. Settings → Bluetooth → tap (i) next to AirPods → Forget This Device. Then place case near iPhone with lid open and re-pair.
Open the case lid. Look at the small LED. Amber when charging, green when full. If no LED at all: the case battery is fully dead and might have failed entirely. Try charging for 30 minutes and re-check.
Settings → Bluetooth → tap (i) next to AirPods. If a firmware version number doesn't appear, plug case into power, place near iPhone, and wait 30 min — Apple pushes firmware automatically.
If cleaning + cable test + re-pair don't work, you need a replacement case ($99 Apple, $29 with AppleCare+) or replacement set. Apple doesn't repair AirPods cases — they swap them.
When one AirPod is quieter than the other, music sounds off-balance. Fixes range from simple software adjustments to cleaning or replacement.
iOS has an audio balance slider that can shift sound left or right. Make sure it's centered.
On iPhone: Go to Settings → Accessibility → Audio/Visual → Balance. Drag the slider to the center (middle position). This centers audio between left and right AirPods.
Earwax and lint block speaker mesh, reducing volume on that side.
Process: Use a soft, dry brush or toothpick to gently clean the speaker mesh on the quieter earbud. Be very gentle—don't force anything into the mesh.
A reset clears all pairing and audio calibration data.
Process: Settings → Bluetooth → tap info → Forget This Device → hold setup button on case 15 seconds until LED flashes white. Re-pair and test.
Audio balance bugs are fixed in firmware updates. Ensure AirPods are connected to your iPhone for auto-update, or manually check for updates in Bluetooth settings.
If the imbalance exists on another iPhone/iPad but not your primary device, the issue is software/settings, not hardware.
If all software fixes fail and one speaker is genuinely quieter (or producing distorted sound), that earbud's speaker is likely damaged. Speaker replacement requires opening the earbud and microsoldering a new driver. Cost: $99–$150 per earbud (full replacement).
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