[Ask] Zte N880S Sim Unlock

[cfoek]

Hai all i'm from indonesia i have a ZTE N880S CDMA Lock by operator in Indonesia, i want to unlock so i can use other operator, i have input unlock code and it say "Network Unlock Successful" but after boot up it cannot get service / network, if i insert ruim operator that lock the device it can get service / network.

so anyone can help me ? so i can get service / network all operator ?

sorry about my bad English

best regards