Samsung Messager Touch SCH-R631 User Manual page 119

Maintaining Your Phone's Peak Performance
For the best care of your phone, only authorized personnel should
service your phone and accessories. Faulty service may void the
warranty.
There are several simple guidelines to operating your phone properly
and maintaining safe, satisfactory service.
To ensure that the Hearing Aid Compatibility rating for your phone is
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maintained, secondary transmitters such as Bluetooth and WLAN
components must be disabled during a call. For more information, refer to
"Turn Bluetooth On / Off" on page 76.
If your phone is equipped with an external antenna, hold the phone with the
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antenna raised, fully-extended and over your shoulder.
Do not hold, bend or twist the phone's antenna, if applicable.
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Do not use the phone if the antenna is damaged.
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If your phone is equipped with an internal antenna, obstructing the internal
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antenna could inhibit call performance.
Speak directly into the phone's receiver.
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Avoid exposing your phone and accessories to rain or liquid spills. If your
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phone does get wet, immediately turn the power off and remove the
battery. If it is inoperable, call Customer Care for service.
Health and Safety Information 115