Adjust the volume on iPhone
Adjust the volume of media, alerts, and sound effects using the side buttons, Siri, or Control Center.
Use the volume buttons or Siri to adjust volume
When you’re on a call or listening to songs, movies, or other media on iPhone, you can use the buttons on the side of your device to adjust the audio volume. Otherwise, the buttons control the volume for the ringer, alerts, and other sound effects.
You can also use Siri to turn the volume up or down.
Siri: Say something like: “Turn up the volume” or “Turn down the volume.” Learn how to use Siri.
WARNING: For information about avoiding hearing loss, see Important safety information for iPhone.

Lock the ringer and alert volumes in Settings
Go to Settings
, then tap Sounds & Haptics.
Turn off Change with Buttons.
Adjust the volume in Control Center
When iPhone is locked or when you’re using an app, you can adjust the volume in Control Center.
Open Control Center, then drag .
Reduce loud headphone sounds
Go to Settings
> Sounds & Haptics > Headphone Safety.
Turn on Reduce Loud Sounds, then drag the slider to specify the maximum volume.
Note: If you set up Screen Time for a family member, you can prevent them from changing the Reduce Loud Sounds level. Go to Settings > Screen Time > Content & Privacy Restrictions > Reduce Loud Sounds, turn on Content & Privacy Restrictions, tap Reduce Loud Sounds, then select Don’t Allow.
On iPhone, there are several ways to protect your hearing from loud volume while listening to headphone audio. See Use audiogram data in Health on iPhone.