Depending on how loud you pump up the volume, listening to music on your phone can hurt your ears.
Stereocilia are tiny hair cells that turn sound waves into electrical signals that your brain can understand. Hearing ability can degrade when these cells are damaged.
Keeping the volume at 70 decibels or less is recommended by experts to keep the stereocilia intact. Hearing loss can occur after just two hours if you get to 85 decibels.
Many phones and headphones go up to 100 decibels or more. Hearing loss is possible after just five minutes if you're in a loud club. The risk of serious damage increases with the length of exposure.
It's important that the volume controls on your phone or headphones are kept up to date. Don't be tempted to crank up the volume.
If you don't want to fiddle with the volume all the time, you can set a limit on how high it can go, which is very useful if you're on the move. It is easier to do on the iPad than it is on the phone.
It's an iPad
If Apple finds out that you're listening to audio through headphones at a volume that's too high, it will warn you. If you connect your headphones after this warning, the volume will be lowered for you, but you can ramp it up again if you want.
You can use your phone to reduce sounds in real time that are over a decibel level. You can choose your level if you turn on the Reduce Loud Sounds switch.