But who is playing shenanigans Samsung or Apple.
Did Apple Spec out the correct specs to Samsung and they made a cheap knockoff, after sending a batch that seems to meet initial QA, in a very German style. Or did Apple know about/agree to giving different quality products.
There's a third possibility that should not be discounted out of hand - Samsung meets the specification, while TSMC exceeds it. Without access to internal information, it's hard to tell what's going on behind the curtain and all too easy to leap on the 'obvious' conspiracy.
Of course, the various mega corps routinely indulge in behavior that makes conspiracy theories not all that far fetched...