Apple iPhone 7 vs. iPhone 7 Plus: Comparison Review Of Performance, Cameras And Other Specs, Features. By iPhone display list: Size, resolution, ppi, brightness iPhone 7 Plus display? 5.5-inch – 1920 x 1080 resolution – 401 ppi – 625 nits – Retina HD LED-backlit LCD. iPhone 7 display? q9rUl.