Question: how much bigger is the xs max than the 8 plus?
Answer: Both these phones have big screens, but the iPhone XS Max's is by far the largest at 6.5 inches, while the iPhone 8 Plus is 5.5 inches. The XS Max is also higher resolution at 1242 x 2688 and 458 pixels per inch, compared to the 1080 x 1920, 401ppi display on the iPhone 8 Plus.