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Apple's xs screen size: 5.8 inches! The screen is made of Super Retina HD display (OLED full screen), and the surface is coated with oil-resistant fingerprint coating. The entire screen has a 5.8-inch (diagonal) design. Support HDR, original color display, wide color gamut display (P3).
Apple xsx does not support wifi6.
wifi6 is a network protocol standard announced by the WiFi Alliance in October 2018. The iphonexsmax is Apple's.
The xs doesn't support wifi6, a standard that was only announced in October 2018