Here are the differences between them. DON’T MISS: The 12 best new features of Apple’s iPhone 7. The 4.7-inch iPhone 7 and 5.5-inch iPhone 7 Plus have the exact same size as their predecessors, no surprises there. Apple stuck with 1334 x 750 resolution for the smaller iPhone and 1920 x 1080 for the phablet. Again, no surprises here.