I am using in Canada Vancouver the H/W from Korea with Rogers service.
When I start Cellphone then the Cellphone could not regist to Rogres GSM network.
Then I move to the USIM card to another Rogers Cellphone then it is work on new Cellphone.
Finally, the USIM card to the Samsung BJ SCH-M6200 then it is working.
I am not sure what is problem.
Am I need H/W unlock or USIM card unlock?
Thanks.