iPhone开发逻辑分辨率（含iPhone X）

逻辑分辨率（iOS开发及设计人员使用）：

iPhone 4s/4/3GS/3G: {{0, 0}, {320, 480}}   宽高比   0.666

iPhone 5/5S/5c/SE: {{0, 0}, {320, 568}}        0.5633

iPhone 6:      {{0, 0}, {375, 667}}            0.5622
iPhone 6Plus:  {{0, 0}, {414, 736}}            0.5625

iPhone 6s:     {{0, 0}, {375, 667}}
iPhone 6s Plus: {{0, 0}, {414, 736}}

iPhone 7:      {{0, 0}, {375, 667}}
iPhone 7Plus:  {{0, 0}, {414, 736}}

iPhone 8:      {{0, 0}, {375, 667}}
iPhone 8Plus:  {{0, 0}, {414, 736}}

             
iPhone X:       {{0, 0}, {375, 812}}           0.4618