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yes, the phone was locked to a network and needs unlocking codes I can't use any similar please help...When you say "SIM block" what exactly do you mean? Do you mean that the phone is locked to a network and needs unlocking, or that the phone itself has been blacklisted, or that the SIM is not working?
is there a site offering free unlocking?There are many sites offering unlocking for a small charge. I would use one of these since there does not appear to be any free software unless you are prepared to root your handset