Does anyone have an idea about how to remove network restriction? First of all, is necessary to access Service Menu: I call to 2945#*690# and I receive the following message: Connection problem or MMI code invalid. Is there another number? Or this happened because I don't have stock ROM? Second, after accessing Service Menu, is necessary a code (generated by IMEI) to unlock network restriction. So, where (or how) can I find this code?