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Troubleshooting
Message
Insert SIM card
Input PIN
No one can call me
Network fail
Poor sound quality
during
conversation
I cannot hear the
caller./ The caller
cannot hear me
The connection
cannot be
established
Make sure that the SIM card is installed
correctly.
If the SIM card is secured with the PIN code
you have to enter the PIN when turning the
phone on and press <OK>.
The phone has to be on and within GSM
network reach.
In areas where signal or reception is weak,
calls may not be possible. Also receiving calls
may not be possible. Move to another
location and try again.
Make sure that the speaker and microphone
are not covered.
The mic. should be close to mouth.
Check if the built-in mic. is not covered.
When a headset is in use, check if it has been
connected correctly.
Check if the built-in speaker isn't covered.
Check if the typed-in phone number is
correct.
Check if the phone number entered to the
[Contacts] is correct.
Enter the correct phone number if necessary.
30
Possible solution
MF2304_MF2304e
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