To adjust bass on iPhone, use the built-in Equalizer (EQ) in the Settings app. This is the primary and most direct method to increase or decrease bass for all audio output, including headphones.
How to adjust bass on iPhone using the built-in EQ
To access the EQ settings, open the "Settings" app, scroll down and tap "Music", then tap "EQ" under the Playback section. Select a bass-heavy preset such as Bass Boost or Hip-Hop to immediately increase low-end frequencies. This setting applies to all audio played through your iPhone, including music, videos, and games, whether you use the built-in speaker or headphones.
Adjusting bass in Spotify, Deezer, and other apps
For users who primarily stream music through third-party services, many apps offer their own equalizer. In Spotify, navigate to Settings and tap Playback to find the equalizer. Deezer users can access similar controls under Audio or Sound settings in the app. These in-app equalizers provide an alternative for fine-tuning bass without changing your iPhone's system-wide EQ, which is useful if you prefer different settings for different streaming platforms.
What about Sound Check and Reduce Loud Sounds?
Sound Check is a feature in the Music settings that normalizes volume across all songs in Apple Music. Reduce Loud Sounds, found under Settings > Sounds & Haptics > Headphone Safety, limits maximum decibel levels for hearing protection. For the built-in speaker (on iOS 26), a "Reduce Loud Sounds" toggle (Settings > Sounds & Haptics > Built-In Speaker) compresses the volume range, making loud sounds softer. Neither of these settings adjusts bass frequencies. Sound Check balances loudness, while Reduce Loud Sounds compresses volume range for safety, they do not enhance or reduce bass. For bass adjustment, always use the EQ presets described above. Note that these features are separate from your phone's display and home screen settings, which control visual elements like brightness and wallpaper, not audio.
Frequently Asked Questions
Does the iPhone EQ work with Bluetooth headphones?
Yes, the system-wide EQ applies to all Bluetooth headphones and speakers connected to your iPhone, just as it does with wired headphones.
Can I create a custom EQ setting instead of using presets?
No, the iPhone's built-in EQ only offers preset options like Bass Boost, Hip-Hop, and others. You cannot manually adjust individual frequency sliders.
Will changing the EQ affect battery life?
No, adjusting the EQ has a negligible impact on battery life. The settings only alter audio processing, which does not significantly drain power.
How do I reset the EQ back to normal?
Open Settings > Music > EQ and select Off to disable any active equalizer preset and return to default sound.
Does the EQ work with Apple Music only?
No, the system-wide EQ in Settings > Music applies to all audio output from your iPhone, regardless of the app playing sound.
Can I adjust the bass on my iPhone while using headphones?
Yes, you can adjust the bass on your iPhone while using headphones. The bass settings apply to all audio output, including both the built-in speakers and headphones connected to your iPhone.
Can I adjust the bass on specific apps or music streaming services?
Unfortunately, the ability to adjust the bass settings on specific apps or music streaming services depends on the app itself. Not all apps provide custom EQ settings. However, you can adjust the overall bass settings in your iPhone's Settings app, which will have an impact on the sound output of all apps and services.
