Music Only Playing in One Ear on iPhone? Here's How to Fix the Balance (2026)

The short answer

If the sound has gone lopsided — one side louder, or the singer sitting off to your left instead of in front of you — check this before you do anything else:

Settings › Accessibility › Audio & Visual. There is a Balance slider there, marked L and R, and it should be dead centre.

That slider is the single most common cause, and almost nobody knows it exists. It is easy to nudge while scrolling, it survives restarts, and it applies to *everything* the phone plays — every app, every pair of headphones, forever, until you move it back. People replace perfectly good earbuds over it.

Drag it back to the middle. If that fixed it, you are done and you just saved yourself a purchase.

If it was already centred, the rest of this page is the triage, in the order that finds the cause fastest.

First, 30 seconds that tells you where the problem is

Before changing any settings, work out *which layer* is broken. Three quick tests, and each one rules out a whole category.

Test 1 — swap ears. Take both buds out and put the left one in your right ear and vice versa. If the quiet side follows the *earbud*, it is hardware. If the quiet side stays on the same side of your *head*, it is not the earbuds.

Test 2 — change the source. Play something in a different app. A video, a voice memo, anything. If every app is lopsided, it is the phone or the headphones. If only one app is, it is that app's own settings.

Test 3 — change the song. Try something recorded in the last twenty years. Some older recordings genuinely are lopsided on purpose — more on that below, and it catches people out more often than you would think.

Those three tests take half a minute and they tell you which of the next four sections to read.

If it followed the earbud: it is hardware, and it is usually earwax

This is the boring answer and it is right more often than any other.

The mesh on an earbud is a filter, and it clogs. Ear wax, pocket lint and skin oil build up on it gradually, so the volume drops gradually, which is exactly why you do not notice until the two sides are obviously different.

Clean it properly. A dry soft-bristled brush — a clean, dry toothbrush works — with the bud held mesh-downwards so debris falls out rather than in. No water, no alcohol, nothing pointed. Apple's own guidance is explicit about not getting moisture in the openings, and a cocktail stick pushes the blockage deeper and can puncture the mesh.

Check the charge on each bud separately. On truly wireless pairs, a bud that is nearly flat can drop its output before it disconnects. Put both in the case, give them ten minutes, try again.

Check the case contacts. If one bud never charges properly it is often grime on the contacts in the case, not the bud.

Wired? Wiggle the plug while something is playing. If the sound cuts in and out at a particular angle, the cable has failed at the strain point — that is a dead cable, not a setting.

If cleaning and charging do not fix it and the fault follows the earbud through Test 1, the earbud has failed. Nothing in Settings will bring it back.

If it stayed on the same side of your head: check these three settings

All three live in Settings › Accessibility › Audio & Visual, and all three are system-wide.

Balance. The slider described at the top. Centre it. If you use Guided Access, a screen protector case, or you hand your phone to kids, this gets moved more often than you would expect.

Mono Audio. When this is on, both ears get the same signal. That is a *feature* — it is there so that someone with hearing in one ear does not miss instruments that were panned to the other side — but if it got switched on by accident, music loses its stereo image and can feel oddly flat or centred. Some people describe that as "one ear sounds wrong" even though both are technically equal.

Headphone Accommodations. This applies a tuning curve to what you hear, and it has a per-ear component. If it was set up with a Custom Audio Setup at some point, or someone ran the tone test carelessly, it can legitimately make one side quieter. Turn it off entirely and listen again. If that fixes it, re-run the setup properly rather than leaving it off.

Work through them in that order. Balance first, because it is the one that is almost always the culprit.

If only one app is lopsided: it is that app's own controls

Plenty of music apps have their own balance or EQ layer that sits on top of the system one, so a setting inside the app can make it the only lopsided thing on your phone.

In Trending Music, that lives in Settings › Playback › Equalizer. That screen has the band sliders and, below them, a Balance control with L and R at either end. It snaps back to centre when you drag it near the middle, so you can reset it by feel.

It is free — the equalizer is not behind the subscription — and it only affects playback inside the app, which is the point: if you actually want a permanent offset because of your own hearing, the system-wide Accessibility slider is the better place for it, because it will apply to podcasts and video and phone calls too.

If you use a different app, look for "Balance", "Equalizer" or "Audio" in its settings. If it has neither and it is still the only lopsided app, delete and reinstall it before assuming the phone is broken.

When it is the recording, not your phone

This one sends people to the Apple Store for no reason.

Stereo was new in the 1960s, and engineers used it far more aggressively than they do now. On a lot of records from that era the drums sit almost entirely in one ear and the vocal in the other, because the mix was made for speakers across a room rather than for headphones clamped to your head. On headphones it sounds broken. It is not — it is the mix.

Early Beatles records are the famous example, but the whole decade is full of it, and a fair number of 1970s live albums too.

How to tell: if one specific song or album is lopsided and everything else is fine, it is the recording. Play the same track on a speaker and it will sound normal, because the two channels mix in the air before they reach you.

What to do about it: turning on Mono Audio, in that same Accessibility screen, collapses both channels together and makes those old records listenable on headphones. It is the one case where Mono Audio is the fix rather than the problem. Turn it back off afterwards.

The possibility worth taking seriously

We would rather say this plainly than leave it out.

If the sound stays on the same side of your head, every app is affected, every pair of headphones is affected, the Balance slider is centred, Mono Audio and Headphone Accommodations are off — and especially if it came on suddenly, or with ringing, fullness or dizziness — the phone is probably not the problem.

Sudden hearing loss in one ear is treatable, and the treatment is much more effective in the first few days. It is worth a same-week appointment rather than a wait-and-see.

A no-cost sanity check first: use the Balance slider deliberately. Push it hard to the left, then hard to the right, with something familiar playing. If the phone can clearly deliver loud sound to the quiet side and it still sounds wrong, that is useful information to walk in with. Centre it again afterwards.

Most of the time it really is a clogged mesh or a nudged slider. But "my phone is broken" is a comfortable explanation, and it is worth checking the uncomfortable one.

The 60-second version

In order, stopping as soon as it sounds right:

1. Settings › Accessibility › Audio & Visual › Balance — centre it. 2. Same screen — Mono Audio off, Headphone Accommodations off. 3. Swap the earbuds between ears. Fault follows the bud → clean the mesh with a dry brush, charge both, check the case contacts. 4. Try another app. Only one app wrong → that app's own EQ or balance control. In Trending Music: Settings › Playback › Equalizer. 5. Try a modern recording. Only old songs wrong → it is the mix, and Mono Audio is the fix. 6. Everything centred, every app, every pair of headphones, came on suddenly → book an appointment.

Steps 1 and 3 between them account for the overwhelming majority of cases, and both are free.

Then go and listen to something

Once it is centred again, stereo is worth enjoying deliberately — it is the thing you just got back.

Trending Music is free, and the equalizer and balance controls described above are part of the free app rather than the subscription. If you want somewhere to start, a well-recorded live session is the best demonstration of a stereo image there is: you can hear where people are standing.

**Get Trending Music on the App Store**

Related reading: our guide to the best equalizer settings for AirPods covers what to do with those band sliders once the balance is sorted, and why your music keeps pausing handles the other big "is my phone broken" question.