Sony Ericsson Z710i User Manual
Page 87
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87
Troubleshooting
Insert Correct SIM Card.
Possible cause: The phone is set to
only work 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
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Yes
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.
No Nwk Coverage
Possible cause: Your phone is in flight
mode.
Solution: Restart the phone in normal
mode
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, search for a network.
Insert SIM.
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.