Chosen Solution

So I have an iCloud unlocked motherboard but it’s coming out of a carrier locked iPhone and I have a carrier unlocked iPhone that has iCloud lock. Now I know that if I switch the iCloud unlocked one iCloud locked one it will function but what will happen with the carrier will I still be able to put a sim into the switches motherboard w that carrier unlock?

You’ll need to get the icloud unlocked board unlocked from whatever carrier it’s locked to. It’s locked whether you switch them or not.