Samsung GH68-06534A - Manual (Page 18)

Your phone
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Plug-in speaker
With the plug-in speaker, you can hear sounds more
loudly.
To use it, take off the cover and then connect the
plug-in speaker to the ear-microphone jack at the
right side of the phone.
Built-in antenna
Your phone has a built-in antenna. As with other
mobile radio transmitting equipment, do not touch
the antenna unnecessarily when the phone is
switched on. Contact with the antenna affects call
quality and may cause the phone to operate at a
higher power level than needed.