God Telus owns Koodoo, just like rogers owns fido, which of course if you owned a rogers phone it would not be restricted from using a fido chip, because that would not make - business - sense. they want you to stay with them no matter if you're with their junior company. and if someone tried it and it didn't work for them; well this must have hppened before the main carrier - which by the way are: Telus; Bell; Rogers - acquired them. all companies like: fido, chatr = Rogers, koodoo, mike, clearnet = Telus, pc mobile, virgin, solo = Bell and then there is Wind, who are independent, but because they have a different frequency spectrum which is a little higher then the main carriers i'm talking about here, the higher the frequency, the less distance it can travel, this is what T-mobile is doing, because all lower frequencies are regulated by governments. so Wind happened in western Canada by selling crappy frequencies. I hope this helps you not make more pointless claims as this one