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Copyright © 2004 Nokia. All rights reserved.
65
b) To activate the EFR CODEC
With the display clear perform the follow-
ing key press sequence:
*3370# or *EFR0#
i.e. press the "*" key, then the "3" key and
so on...
Notes to a) and b)
i) Immediately after pressing *3370# (or
#3370#) the phone will automatically
power itself off and then on again - this is
NORMAL and also serves to indicate that
deactivation (or activation) has occurred.
During the automatic power off/on se-
quence the LCD display will become clear,
the back lights will switch off and then the
display will come back on.
ii) If during activation/deactivation the
wrong key is pressed, clear the wrong entry
by pressing the key.
iii) If at any time you choose to quit the
process then press and hold the key.
3. Suggested Tip
you may wish to store the above activa-
tion/deactivation sequences in the phone-
book.
Name: EFR ON
Number: *3370#
Name: EFR OFF
Number: #3370#
To save the activation sequence to the
phonebook, the name MUST be entered
first otherwise deactivation or activation
of the EFR codec will occur.