I put my sim card from galaxy 4 to galaxy 5 and its not working can you tell me why

[Charles_177]

I removed my sim card from my galaxy 4 and put it in my galaxy 5 because my 4 quit working. But now I can't get calls and my contacts are not showing up.

 

[Saga Lout]

Sounds like your Samsung Galaxy 5 is already contracted to a different Service Provider than your SIM.

You need a PUK (personal unlocking key) from that other provider and you will only get it if the contract is ended or about to end, and that there is no money owing to that company.

 

[Saga Lout]

I think that's why I suggested getting an unlocking key, Rem_1_.