[mothered]

The key to Its success, Is dealing with refurbished phones - which can easily be manipulated and justified with the swap.

I doubt it would go unnoticed. Because they for sure check the IMEI or serial number.
When they see it doesn’t match with what they sent out, you got a problem

It's "refurbished" so the question Is, Is It In fact what they sent out? Unless they go through a rigorous 20-point Inspection prior to dispatch (as per Amazon Warehouse Deals), then It's easily manipulated.

It's a different story If It was brand new and factory sealed.