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utils/isSafariOnIOS.js

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+export function isSafariOnIphone() {
+  var userAgent = window.navigator.userAgent;
+  var isIOS = /iPad|iPhone|iPod/.test(userAgent) && !window.MSStream;
+  var isChrome = /CriOS/.test(userAgent);
+  var isOpera = /OPiOS/.test(userAgent);
+  var isSafari = /Safari/.test(userAgent) && !isChrome && !isOpera;
+
+  if (isIOS && isChrome && !isOpera) {
+    return false;
+  } else return isIOS && isSafari;
+}