SIM card error
SIM card damaged
SIM card incorrectly installed
SIM card dirty or damp
Failure to connect to network
SIM card invalid
No coverage of GSM service
Signal too weak
Weak signal
Too far from base station
Network congestion
Echo or noise
Regional problem from bad network
relay
Failure to add a contact
Phonebook memory full
Failure to set a function
Function not supported or
subscribed from network
English
Check the condition of the SIM
card. If it is damaged, contact the
network operator.
Check the installation of the SIM
card. Remove the card and reinstall
it.
Wipe the contact surfaces of the
SIM card with a clean cloth.
Contact the network operator.
Contact the network operator.
See
Weak signal
Try again from another location.
Try calling at a later time.
Hang up and redial. This may
switch to another network relay.
Delete contacts to free up memory.
Contact the network operator.
39
below.