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102 Appendix A Safety and Handling
Charging iPhone
To charge iPhone, only use the Apple Dock Connector to USB cable with an Apple USB
Power Adapter or a high-power USB port on another device that is compliant with the
USB 2.0 or 1.1 standards, another Apple-branded product or accessory designed to
work with iPhone, or a third-party accessory certified to use Apple’s “Works with
iPhone” logo.
Read all safety instructions for any products and accessories before using with iPhone.
Apple is not responsible for the operation of third-party accessories or their compliance
with safety and regulatory standards.
When you use the Apple USB Power Adapter to charge iPhone, make sure that the
power adapter is fully assembled before you plug it into a power outlet. Then insert the
Apple USB Power Adapter firmly into the power outlet. Do not connect or disconnect
the Apple USB Power Adapter with wet hands. Do not use any power adapter other
than the Apple USB Power Adapter to charge iPhone.
The Apple USB Power Adapter may become warm during normal use. Always allow
adequate ventilation around the Apple USB Power Adapter and use care when
handling. Unplug the Apple USB Power Adapter if any of the following conditions exist:
 The power cord or plug has become frayed or damaged.
 The adapter is exposed to rain, liquid, or excessive moisture.
 The adapter case has become damaged.
 You suspect the adapter needs service or repair.
 You want to clean the adapter.
Avoiding Hearing Damage
Permanent hearing loss may occur if the receiver, earbuds, headphones, speakerphone,
or earpieces are used at 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 the receiver, earbuds, headphones, speakerphone,
or earpieces 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 iPhone, see page 65.