hi
after unlocking my z560 by code (*2767*3855/ *7465625*638*000000000*00000000#/ *7465625*638*000000000*...).
my phone is unlocked. some times there is network but don't make or receive call, some times no network sservice limited.
every thing is ok. the IMEI is ok don't changed.
i don't know what's the problem and how to solve this problem.
plz some one help me to fix it
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