[Q] no network card in 2nd sim topic

hello xda developers,, recently my friends phone was block bec. his son atempt to open but it was screen lock and now it seems ruin the pasword. after that the will not open, then i hold the power,volume up,home button, and then i reboot. after that it back in good condition.. the suddenly after an hour of installing application, i noticed that the sim 2 slot says no network card but ther is a functioned simcard.. pls.help me to solved this case. i've done re setting the simcard mnger. but still no network card thanks.....