Sony Ericsson Z520i User Manual page 76

Troubleshooting
Insert correct SIM card
Possible cause: The phone is set to work only
with certain SIM cards.
Solution: Check if you are using the correct operator
SIM card for your phone.
Wrong PIN/Wrong PIN2
Possible cause: You have entered your PIN
or PIN2 incorrectly.
Solution: Enter the correct PIN or PIN2
%
} Yes.
70 SIM card lock.
PIN blocked/PIN2 blocked
Possible cause: You have entered your PIN
or PIN2 code incorrectly three times in a row.
Solution: To unblock,
Codes do not match
Possible cause: The two codes that you have entered
do not match.
Solution: When you want to change a security code
(for example your PIN) you have to confirm the new
code by entering exactly the same code again.
%
70 SIM card lock.
76
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%
70 SIM card lock.
No netw. coverage
Possible cause: Your phone is not receiving any
radio signal, or the received signal is too weak.
Solution: Contact your network operator and make
sure that the network has coverage where you are.
If so, try to do a new search.
Possible cause: The SIM card is not working
properly.
Solution: Insert your SIM card in another phone.
If you still get the same or a similar message, please
contact your network operator.
Possible cause: The phone is not working properly.
Solution: Insert your SIM card in another phone.
If this works, it is probably the phone that is causing
the problem. Please contact the nearest
Sony Ericsson service location.
Emerg. calls only
Possible cause: You are within range of a network,
but you are not allowed to use it. However,
in an emergency, some network operators allow
you to call the international emergency number 112.
Solution: You have to move to get a signal that
is strong enough. Contact your network operator
and make sure your subscription is ok.
%
20 Emergency calls.