diff --git a/test/PhoneNumbers.Tests/GeographicPhoneNumberTests.cs b/test/PhoneNumbers.Tests/GeographicPhoneNumberTests.cs
index ff19bc2f..2102c0ca 100644
--- a/test/PhoneNumbers.Tests/GeographicPhoneNumberTests.cs
+++ b/test/PhoneNumbers.Tests/GeographicPhoneNumberTests.cs
@@ -187,14 +187,19 @@ public void Inequality()
         Assert.False(phoneNumber1 == phoneNumber4);
         Assert.True(phoneNumber1 != phoneNumber4);
 
-
+        // change country
         var phoneNumber5 = new GeographicPhoneNumber(PhoneNumberHint.None)
         {
             Country = CountryInfo.France,
-            GeographicArea = "N/A",
-            NationalDestinationCode = null,
-            NationalSignificantNumber = "12345667788",
-            SubscriberNumber = "667788",
+            GeographicArea = phoneNumber1.GeographicArea,
+            NationalDestinationCode = phoneNumber1.NationalDestinationCode,
+            NationalSignificantNumber = phoneNumber1.NationalSignificantNumber,
+            SubscriberNumber = phoneNumber1.SubscriberNumber,
         };
+
+        Assert.NotEqual(phoneNumber1, phoneNumber5);
+        Assert.False(phoneNumber1.Equals(phoneNumber5));
+        Assert.False(phoneNumber1 == phoneNumber5);
+        Assert.True(phoneNumber1 != phoneNumber5);
     }
 }
diff --git a/test/PhoneNumbers.Tests/MobilePhoneNumberTests.cs b/test/PhoneNumbers.Tests/MobilePhoneNumberTests.cs
index 9e7e1bd6..e1b0ec9b 100644
--- a/test/PhoneNumbers.Tests/MobilePhoneNumberTests.cs
+++ b/test/PhoneNumbers.Tests/MobilePhoneNumberTests.cs
@@ -157,5 +157,19 @@ public void Inequality()
         Assert.False(phoneNumber1.Equals(phoneNumber4));
         Assert.False(phoneNumber1 == phoneNumber4);
         Assert.True(phoneNumber1 != phoneNumber4);
+
+        // change country
+        var phoneNumber5 = new MobilePhoneNumber(PhoneNumberHint.None)
+        {
+            Country = CountryInfo.France,
+            NationalDestinationCode = phoneNumber1.NationalDestinationCode,
+            NationalSignificantNumber = phoneNumber1.NationalSignificantNumber,
+            SubscriberNumber = phoneNumber1.SubscriberNumber,
+        };
+
+        Assert.NotEqual(phoneNumber1, phoneNumber5);
+        Assert.False(phoneNumber1.Equals(phoneNumber5));
+        Assert.False(phoneNumber1 == phoneNumber5);
+        Assert.True(phoneNumber1 != phoneNumber5);
     }
 }
diff --git a/test/PhoneNumbers.Tests/NonGeographicPhoneNumberTests.cs b/test/PhoneNumbers.Tests/NonGeographicPhoneNumberTests.cs
index 95efbf95..3737d3ea 100644
--- a/test/PhoneNumbers.Tests/NonGeographicPhoneNumberTests.cs
+++ b/test/PhoneNumbers.Tests/NonGeographicPhoneNumberTests.cs
@@ -209,5 +209,19 @@ public void Inequality()
         Assert.False(phoneNumber1.Equals(phoneNumber4));
         Assert.False(phoneNumber1 == phoneNumber4);
         Assert.True(phoneNumber1 != phoneNumber4);
+
+        // change country
+        var phoneNumber5 = new NonGeographicPhoneNumber(PhoneNumberHint.None)
+        {
+            Country = CountryInfo.France,
+            NationalDestinationCode = phoneNumber1.NationalDestinationCode,
+            NationalSignificantNumber = phoneNumber1.NationalSignificantNumber,
+            SubscriberNumber = phoneNumber1.SubscriberNumber,
+        };
+
+        Assert.NotEqual(phoneNumber1, phoneNumber5);
+        Assert.False(phoneNumber1.Equals(phoneNumber5));
+        Assert.False(phoneNumber1 == phoneNumber5);
+        Assert.True(phoneNumber1 != phoneNumber5);
     }
 }