Hey,Call your service provider to ask your Samsung Network Unlock Code. when you change your current network provider you must need to
Unlock your Samsung champ first. after unlocking you can use your Samsung to any network.but network provider take time to give your imei unlock code.second option is, you can buy your Samsung Imei Unlock Code from third party . this is safe way to Unlock your Samsung . they will charge little amount but they give your
Samsung champ Imei unlock code immediately. i hope this information is help you.
