I just bought an iPhone 6s. The thing is that I'm extremely picky with my iDevices, so I realized when scrolling in white/gray backgrounds (like the one in settings) that there's a white shadow/blemish, it's not that annoying, I mean, I think it is not since I have noticed it , I can't keep but see it all the time! It doesn't show at all in other colors but white. So, the thing is that (at least and for good) it has the TSMC chip on it, and I've read that it's very hard to get an iPhone with this chip. As a matter of fact, any of people I know who bought the same phone has the TSMC on it. So, here goes my question. Should I keep on trying to exchange/return this phone? Do you personally think it is something to worry about (based on the pictures I'm attaching where you can see this white spot/blemish), or am I being too picky? P.D. It's very hard to take photos of this issue, so I took 3: 2 of them in a completely dark room to try to stand out the issue!