How Do You Unlock The Lock Code Of A Sony Ericsson K7770i?
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If the phone is asking for a Phone Lock Code, the default code is 0000. If you changed this and forgot the code, it would need to be sent in for service to be reset, as there is no master code. The rest of your question makes it sound like it is about the subsidy lock in the phone. If you take your SIM out of another phone and put it in your K770i and your K770i says “Insert Correct SIM”, then it means your phone is locked to the original service provider that you purchased the phone from. To unlock it, you need to contact the original service provider and request the NCK or subsidy unlock code. We can’t provider this at Sony Ericsson because we are contractually obligated not to give the code to consumers as part of the agreement we made with the service provider.
