Do you curious about the actual resolution of iPhone 6 Plus? Maximum rendered pixels? Points? PPI? I just found this useful iPhone resolutions map hope this could be helpful to you too.
From the first generation iPhone 2G, to 3G, 3GS, 4, 4S, 5, 5S, 6 and 6 Plus. You can see all the detailed screen resolution, points, PPI, retina or not, upsampling, downsampling and display zoom information very clearly.
Warmest credited to PixelCut’s PaintCode who made this detailed ultimate guide map. Enjoy their efforts!
Wow iPhone 6 Plus support up to 1242 x 2208 (pixels)!
Source: Read more about iPhone Screen Resolutions Map