Sorry for bumping into an old thread, but I want to help. There are several options you can try.
One option is to contact Vodafone and request an unlock code. This may require meeting specific criteria, such as having an active account with them for a particular time, but it's worth exploring. Also, check out a guide on how to fix an invalid SIM card. Good luck, and let us know if you have any other questions or concerns.
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