I'm on my third phone now but none of them have been right. I haven't swapped for 'perfectionist' reasons either! The first had a very dodgy home button that failed to register the majority of presses. The second had a strange screen issue where it became dim & washed out at random times, and this one has appalling battery life. I haven't swapped for screen pressure blotches, uneven backlighting or because I have a Samsung chip. I firmly believe that a working home button, decent screen and battery life comparable to the two previous phones I exchanged are perfectly valid reasons to exchange.
This thing cost me £699 and I'm not going to settle for any glaring faults. Trouble is, they're out of stock again so I'm having to go through the terminally tedious rigmarole of checking the Apple website twice a day. Oh and at this point I'm fairly pessimistic about receiving a fault-free phone. What will I receive next time and at what point do I give up and get a refund? I've sold my old 6+ so can't return to that, not that I'd want to, so where do I go from here? The QC is disastrous for such an expensive product. I think the problem is that iPhones are just too damned popular and Apple can't keep up with demand, let alone check for faults before they're boxed up. I sooo don't want to be forced down the Android route but I'm getting pretty sick of this exchange business.
I will hasten to add that if you manage to stumble upon a fault-free 6S+ it's a cracking phone. That's what annoys me, I want one!