![background image](http://html.mh-extra.com/html/samsung/sgh-e640/sgh-e640_user-manual_1190599093.webp)
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The audio quality of the call is poor
• Check the signal strength indicator on the display
(
). The number of bars indicates the signal
strength from strong (
) to weak ( ).
• Try moving the phone slightly or moving closer to a
window if you are in a building.
No number is dialled when you re-call a
Phonebook entry
• Use the Contacts list feature to ensure the number
has been stored correctly.
• Re-store the number, if necessary.
If the above guidelines do not help you to
solve the problem, take note of:
• The model and serial numbers of your phone
• Your warranty details
• A clear description of the problem
Then contact your local dealer or Samsung after-sales
service.
Health and safety information
Exposure to Radio Frequency
(RF) Signals
Your wireless phone is a radio transmitter and
receiver. It is designed and manufactured not to
exceed the emission limits for exposure to radio
frequency (RF) energy set by the Federal
Communications Commission (FCC) of the U.S.
Government. These limits are part of
comprehensive guidelines and establish
permitted levels of RF energy for the general
population. The guidelines are based on the
safety standards that were developed by
independent scientific organizations through
periodic and through evaluation of scientific
studies.