diff -u b/js/telephone_international_widget.js b/js/telephone_international_widget.js
--- b/js/telephone_international_widget.js
+++ b/js/telephone_international_widget.js
@@ -66,7 +66,7 @@
           errorMsg.classList.add('hide')
           if (event.type === 'blur') {
             input.value = iti.getNumber(intlTelInputUtils.numberFormat.NATIONAL)
-            hiddenInput.value = iti.getNumber(intlTelInputUtils.numberFormat.E164)
+            hiddenInput.value = iti.getNumber(intlTelInputUtils.numberFormat.INTERNATIONAL)
           }
         }
         else {