diff --git a/packages/venia-concept/src/ServiceWorker/Utilities/networkUtils.js b/packages/venia-concept/src/ServiceWorker/Utilities/networkUtils.js
index 29de8d7f43..ad92909682 100644
--- a/packages/venia-concept/src/ServiceWorker/Utilities/networkUtils.js
+++ b/packages/venia-concept/src/ServiceWorker/Utilities/networkUtils.js
@@ -9,7 +9,11 @@
  * @returns {boolean}
  */
 export const isFastNetwork = () => {
-    if (navigator.connection && 'effectiveType' in navigator.connection) {
+    if (
+        navigator.connection &&
+        navigator.connection.saveData !== undefined &&
+        navigator.connection.effectiveType !== undefined
+    ) {
         return navigator.connection.effectiveType === '4g';
     } else {
         /**