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 PIN2Possible cause: You have entered your PIN or PIN2 incorrectly.Solution: Enter the correct PIN or PIN2}Yes % 75 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 % 75 SIM card lock.Codes do not matchPossible 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.
%75 SIM card lock.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.
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.
Troubleshooting 81
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