This is the information provided by the vendor who I bought the unlock code.
I searched the mit bbs and found something. It mentioned unlock the network, not the call."我經曆過,你改的可能是network裏的GSM,不是Call裏的GSM。" "我記得也是,改了 network 裏麵 GSM 以後不行,call 裏麵改了就可以了,network 裏麵不知道是不是必須改,還是留原來的值好。" How to unlock the call?
Thanks!