To fix Apple headphones, you can try the following steps:

- Check for debris in the headphone port on your iPhone or iPad.
- Check your headphone cable, connector, remote, and earbuds for damage, like wear or breakage.
- Look for debris on the meshes in each earbud. To remove debris, gently brush all openings with a small, soft-bristled brush that's clean and dry.
- Firmly plug your headphones back in.
- Go to Accessibility in Settings and select Audio/Visual. Select the Audio/Visual option in the Accessibility menu. Check the stereo balance slider and adjust if necessary. Adjust the stereo balance slider if necessary. Lastly, toggle Mono Audio to Off to utilize stereo audio.
- Plug your headphones into your device and play an audio or video file. Locate the short by bending the headphone cord every half inch. Remove the damaged portion of the wire. Get the remaining sections of the headphone cord. Separate the copper wires (ground wires), insulation (white wires), and colored wire. Cut the insulation wires.