only mobilnk GSM Network is working

[AC Question]

Aslam-o-Alaikum,

I have samsung glaxy s3 korian e210L. I am from Pakistan. in My phone only mobilink network is working. when i insert other network sim this show that no Sim insert sim or USIM card. Please help me to resolve this issue.

 

[B. Diddy]

Maybe those other SIMs are faulty, or aren't compatible.