Making RCTIsIPhoneX() return true for the R and Max models

Summary: Actual sizes can be found on the offical website.

Reviewed By: fkgozali

Differential Revision: D9837072

fbshipit-source-id: 38b3f2177629e82740eecc8df4566febbe20815a

Author: shergin

React/Modules/RCTDeviceInfo.m

@@ -58,10 +58,15 @@ static BOOL RCTIsIPhoneX() {
   dispatch_once(&onceToken, ^{
     RCTAssertMainQueue();
 
-    isIPhoneX = CGSizeEqualToSize(
-      [UIScreen mainScreen].nativeBounds.size,
-      CGSizeMake(1125, 2436)
-    );
+    CGSize screenSize = [UIScreen mainScreen].nativeBounds.size;
+    CGSize iPhoneXScreenSize = CGSizeMake(1125, 2436);
+    CGSize iPhoneXMaxScreenSize = CGSizeMake(1242, 2688);
+    CGSize iPhoneXRScreenSize = CGSizeMake(828, 1792);
+
+    isIPhoneX =
+      CGSizeEqualToSize(screenSize, iPhoneXScreenSize) ||
+      CGSizeEqualToSize(screenSize, iPhoneXMaxScreenSize) ||
+      CGSizeEqualToSize(screenSize, iPhoneXRScreenSize);
   });
 
   return isIPhoneX;