I currently work as an Aerospace Machinist. I make parts that go into jet engines. Even the products that I make have tolerances (acceptable ranges of dimensions and specs)... and our products are integral to keeping an airplane in the sky! There is no such thing as perfection. A blueprint is a theoretical perfect target to shoot for.... but all of them allow for tolerances! If I am grinding a shaft, often times, I only have + or - .0005 (I've even seen tighter tolerances) on the diameter size. All manufacturing processes allow for variation within tolerance. The iPhone is no different. Apple designed the A9 chip with tolerances. They went to both Samsung and TSMC and said "the chip must perform within this range..." ... probably with regard to performance, energy consumption, temperature, stability, etc. When Apple announced the iPhone with all of the claimed specs and battery life, they most likely under promised (using data taken from the Samsung). If TSMC is delivering more than Apple's promise... then kudos to those who were lucky enough to get that chip. If you got a Samsung... quit whining! Apple has not withheld anything from you or not delivered anything below their promise. Swapping phones hoping to get another chip is stupid... and actually a bit egotistical. It's almost like you believe you are entitled to something better... "just because." The next time you ride in an airplane... think about this. Are you going to ask the airline to find out who made the parts in the engine and if you are not satisfied, ask to ride in a different plane? Get over it and yourself and just enjoy the new iPhone.