Hi, I bought an iphone 5 locked to Sprint carrier in the US. I live in Canada so would it work here when I put in my GSM Rogers SIM card? I'm not sure if the phone has good or bad ESN but would that matter anyways? my understanding is that a phone with bad ESN can not be activated with sprint? can someone help me out please? again I'm not gonna use the phone with a US carrier, I'm gonna be using it in Canada. Joe.