Avoiding hearing damage
Permanent hearing loss may occur if you use your phone and/or headset at a high volume. Set the volume to a safe level. You can adapt over time to a higher volume of sound that may sound normal but can be damaging to your hearing. If you experience ringing in your ears or muffled speech, stop listening and have your hearing checked. The louder the volume, the less time is required before your hearing could be affected. Hearing experts suggest that to protect your hearing:
]Limit the amount of time you use your phone and/or headset at high volume.
]Avoid turning up the volume to block out noisy surroundings.
]Turn the volume down if you can't hear people speaking near you.
For information about how to set a maximum volume limit on your phone, see the features guide for your phone.
For Your Safety 
Using your phone safely
Use of your phone while operating a vehicle is not recommended and is illegal in some areas. Be careful and attentive while driving. Stop using your phone if you find it disruptive or distracting while operating any type of vehicle or performing any other activity that requires your full attention.
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