How to get correct scale factor for iPhone 6+?

Question

When retina devices were introduced I started using this code in my apps:

int retinaMult = [[UIScreen mainScreen] scale];

which would return 1 on a non-retina device and 2 on a retina device. I assumed it would return 3 on an iPhone 6+ but I'm still getting a 2. Is there something else I need to be doing?

Note: I tried nativeScale instead of scale and that returned the same numbers.

Answer 1

Add lauch images to enable native iPhone 6 and iPhone 6+ resolution.