As I said earlier, the iphone 6 Plus 1080p resolution screen is an apple result of the technology compromise, and I have no direct evidence to prove it, but according to our IOS Developer's study of the new Xcode, we found that the logic of the iphone 6 Plus Resolution is not the 1080p, but a very strange value: 1242 x 2208.
The biggest problem with this logic resolution is that the physical resolution of the iphone 6 Plus we get now is different, which leads directly to the fact that all 3x images do not actually get the perfect display on the iphone 6 Plus. According to the foreign media, even if it is Apple's own application, on the IPhone 6 Plus real-world display also there will be a virtual pixel point of the situation [reference not found ...], a picture material is forcibly stretched to the physical resolution of the system, I think even the Apple pixel processing algorithm is powerful, it can not let developers, The designer's ideas are not in the hands of the user.
Weird size.