Yeah. Exchange until you get TSMC. Me too. WOOOHOOOOOOI'm happy. I got a TSMC A9 chip on my unlocked Rose Gold 128G AT&T iPhone (A1634), which is equivalent to the Sim-Free version. AT&T unlocked it for me even though it's still on a Next Plan!! Yay!!
Now, I have to really hope nothing goes wrong with this bad boy as I'm carrying it around naked!
My husband is exchanging his iPhone 6s+ tomorrow since it has a bad battery life and it happens to be a Samsung A9 chip.