I don't understand why some of you are making a big deal out of a non-issue. This is completely blown out of proportion. The fact is, both chips meet or exceed Apple's battery and performance claims. Unless you have a defective device, YOU GOT WHAT YOU PAID FOR, regardless of the manufacturer of the Apple-designed A9 SOC in your iPhone. You have no right to demand a particular chip as long as the chip that you ended up with performs at or above Apple's claims, which they BOTH do. To those wanting to return their Samsung for a TSMC--think for just a moment what you're doing. You're wasting your time, Apple's time, the cost and labor of refurbishing (well, not really refurbishing since there's no defect) that iPhone which has absolutely NOTHING wrong with it, just so you can have a 50% chance of getting a TSMC that will offer you nothing but a placebo effect, as any battery or performance difference in REAL-WORLD use is negligible and will NOT be perceptible to the end-user (you). Find something more productive to put your time and energy into. Also, I'm disappointed in the way you MacRumors have been presenting this information. You're contributing to the problem and causing unnecessary...well...everything, from whining constantly about their SOC manufacturer to iPhone returns for no valid reason other than trying to get a TSMC that will make no noticeable difference in the user's day-to-day usage. Bottom line is, they are both A9s that perform as advertised.