see this two links before you start your unlock
http://modemhacking.blogspot.in/2012/08/unlock-code-for-86-imei-173cs-1-1731.html
and also see this link...
http://modemhacking.blogspot.in/2012/07/unlock-211573100284-unlock-211571300910.html
please subscribe this channel , like , follow this that gives us to make more tips like this...
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