I got the S7 Edge from Bell in March. It was never used/activated. (Basically I swapped with my Dad at the store when he signed up with Bell - he never inserted the Bell SIM). I inserted my Rogers SIM thereby locking it to Rogers. It works perfectly fine.
But I'm trying to unlock the phone now through a third party. They say they cannot find my IMEI under Rogers. They are now checking under Bell (waiting to hear back). My question is, is a phone locked to the carrier of the SIM or the carrier from whom you purchased the phone? Who would provide the unlock code?