If you want to make headphones louder on an iPhone, it is natural to reach for a booster app or a new pair. Often you need neither. iOS has several settings that limit or reduce volume, some of which may have been switched on long ago, and a blocked mesh or a poor seal can take away a surprising amount of sound.
Work through the checks below in order, since the first few take only seconds. They apply to wired and Bluetooth headphones alike, and a couple are specific to AirPods.
Start with the iOS volume limits
Three settings account for most sudden drops in volume, and each one takes only a moment to check.
1. Check Reduce Loud Audio
This is the most common cause, and the first place to look. iOS can measure headphone audio and turn down anything above a level you have chosen.
- Open Settings, then tap Sounds & Haptics.
- Tap Headphone Safety.
- Look for Reduce Loud Audio, and check the decibel slider underneath it.
On older versions of iOS, the same option was called Reduce Loud Sounds. Raising the limit a little may be all you need, though the setting exists for a good reason, so avoid simply switching it off. Our safe listening guide explains how to choose a sensible level. On a child's iPhone, the limit may also have been set through Screen Time.
2. Check the volume for that device
iOS remembers a separate volume for each output, so your headphones may be set lower than your speaker, even though the phone seemed loud a moment ago. Connect the headphones, start some audio and press the volume up button. Then open Control Center and check the slider there.
Some Bluetooth headphones have their own buttons as well. Depending on the model, those may control the headphones' internal level separately from the phone, so it is worth trying both.
3. Turn off Sound Check
Sound Check tries to play all your songs at a similar level. In practice, it does this mostly by turning loud tracks down, so music can feel quieter overall with it switched on.
On iOS 18 and later, go to Settings, then Apps, then Music. On earlier versions, go to Settings, then Music. Turn off Sound Check and compare. It applies only to the Music app, and other apps have their own settings. Spotify, for example, has a volume level option in its playback settings, and a louder choice there can help.
Check Balance and the AirPods settings
Next, look at the settings that change how audio reaches each ear, and the AirPods features that lower volume on purpose.
4. Look at Balance and Headphone Accommodations
If one side is quieter than the other, the problem may be the Balance slider and not the headphones themselves.
- Balance. Go to Settings, then Accessibility, then Audio & Visual, and make sure that the slider is centred.
- Headphone Accommodations. This option is on the same page. It tunes audio for your hearing with supported headphones, so if it was set up long ago or by someone else, it may be worth reviewing.
5. Check the AirPods settings
AirPods have a few features that lower volume deliberately.
Open Settings and tap your AirPods' name near the top. If it is not there, tap Audio & Routing. Depending on your model, look for these two options:
- Personalized Volume adjusts media volume according to your surroundings and listening habits.
- Conversation Awareness lowers your media when you start speaking.
Turn each one off in turn, and see whether things improve. If your AirPods have Noise Control, using it can also help, because less outside noise means you do not need as much volume.
Follow along in Volume Booster: Bass Boost EQ
Free on the App Store for iPhone and iPad.
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6. Clean the mesh and check the seal
Physical problems are common and easy to overlook. Earwax and pocket lint can block a mesh enough to reduce both volume and bass. Use a soft, dry brush, keep liquids well away, and do not push anything into the openings.
Then think about the fit. In-ear headphones rely on a good seal, especially for bass, so loose tips can make a good pair sound thin and quiet. Try a different tip size, and if you have over-ear headphones, check that the pads are not worn flat. If only one side is quiet after cleaning, try another pair of headphones to work out whether the issue lies with the headphones or the phone.
What a booster app cannot do
No App Store app can raise the system volume on your iPhone or boost other apps, including Spotify, YouTube and phone calls, because iOS does not allow it. A booster can only amplify the audio it plays itself. Be wary of any app that promises more than that.
7. Fix quiet audio in the file
Sometimes the headphones are fine and the recording is simply quiet. Voice memos, lectures and old downloads are often mastered at a much lower level than modern music. If only certain files seem quiet, the fault probably lies with them.
This is where an app with its own player can really help. You can import a file, raise its level and shape it with an EQ, and bringing up the mid frequencies can make speech clearer without much extra volume. For a sense of what each control does, read what each EQ band does and the best EQ settings for headphones.
8. Know when to stop
If you hear crackling or a harsh edge on loud passages, the signal is probably clipping, and pushing further will make the sound worse without making it much louder. Our guide to fixing distorted audio covers this in more detail.
It is also worth asking whether you need more volume or just a little more clarity. A slight mid-range lift is often easier on your ears than a big boost, and noise-related hearing damage is generally permanent. If normal audio has started to seem quiet everywhere, it may be worth having your hearing checked.
Quick answers
Why are my headphones suddenly so quiet on my iPhone?
Check Reduce Loud Audio first, then the volume for that output, since iOS stores a separate level for each device. After that, look for a blocked mesh or a poor seal.
Can an app make Spotify louder on an iPhone?
No. iOS does not allow an app to boost audio from another app. Check Spotify's own volume level setting instead, along with the checks above.
Is it safe to raise the headphone limit?
A small change is usually reasonable, but long sessions at high volume can damage your hearing. Raise the limit only as far as you need, and take breaks.
Where to get it
Volume Booster: Bass Boost EQ boosts audio played inside the app, including files you import in MP3, M4A, WAV or AIFF format. It has a 10-band EQ with 22 presets, bass and treble controls and a Safe Limiter to help reduce clipping. A rewarded ad unlocks up to 800% for the session, and a one-time Remove Ads purchase keeps it unlocked. It cannot boost music apps, video apps, calls or your iPhone's system volume.
Start with the settings. They are free, and they fix most quiet headphones.