Nokia 5228 - Manual (Page 31)

Warning: When you use the headset, your ability to
hear outside sounds may be affected. Do not use the headset
where it can endanger your safety.
Do not connect products that create an output signal as this
may cause damage to the device. Do not connect any voltage
source to the Nokia AV Connector.
When connecting any external device or any headset, other
than those approved by Nokia for use with this device, to the
Nokia AV Connector, pay special attention to volume levels.
Attach a wrist strap
Tip: Attach the plectrum stylus to the
device as you would a wrist strap.
Your device
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