diff --git a/msa/black-box-tests/src/test/java/org/thingsboard/server/msa/ui/tests/customerSmoke/CreateCustomerTest.java b/msa/black-box-tests/src/test/java/org/thingsboard/server/msa/ui/tests/customerSmoke/CreateCustomerTest.java
index 81fcd6a020..c59ccd62f4 100644
--- a/msa/black-box-tests/src/test/java/org/thingsboard/server/msa/ui/tests/customerSmoke/CreateCustomerTest.java
+++ b/msa/black-box-tests/src/test/java/org/thingsboard/server/msa/ui/tests/customerSmoke/CreateCustomerTest.java
@@ -196,4 +196,24 @@ public class CreateCustomerTest extends AbstractDriverBaseTest {
 
         Assert.assertTrue(urlContains(urlPath), "URL contains " + urlPath);
     }
-}
\ No newline at end of file
+
+    @Epic("Customers smoke tests")
+    @Feature("Create customer")
+    @Test(groups = "smoke")
+    @Description("Go to customer documentation page")
+    public void createCustomerAddAndRemovePhoneNumber() {
+        String customerName = ENTITY_NAME;
+        String number = "12015550123";
+
+        sideBarMenuView.customerBtn().click();
+        customerPage.plusBtn().click();
+        customerPage.titleFieldAddEntityView().sendKeys(customerName);
+        customerPage.phoneNumberAddEntityView().sendKeys(number);
+        customerPage.phoneNumberAddEntityView().sendKeys(Keys.CONTROL + "A" + Keys.BACK_SPACE);
+        customerPage.addBtnC().click();
+        this.customerName = customerName;
+        customerPage.entity(customerName).click();
+
+        Assert.assertTrue(customerPage.phoneNumberEntityView().getAttribute("value").isEmpty(), "Phone field is empty");
+    }
+}
diff --git a/msa/black-box-tests/src/test/java/org/thingsboard/server/msa/ui/tests/customerSmoke/CustomerEditMenuTest.java b/msa/black-box-tests/src/test/java/org/thingsboard/server/msa/ui/tests/customerSmoke/CustomerEditMenuTest.java
index c07e450bc4..47d950c312 100644
--- a/msa/black-box-tests/src/test/java/org/thingsboard/server/msa/ui/tests/customerSmoke/CustomerEditMenuTest.java
+++ b/msa/black-box-tests/src/test/java/org/thingsboard/server/msa/ui/tests/customerSmoke/CustomerEditMenuTest.java
@@ -18,6 +18,7 @@ package org.thingsboard.server.msa.ui.tests.customerSmoke;
 import io.qameta.allure.Description;
 import io.qameta.allure.Epic;
 import io.qameta.allure.Feature;
+import org.openqa.selenium.Keys;
 import org.testng.Assert;
 import org.testng.annotations.AfterMethod;
 import org.testng.annotations.BeforeClass;
@@ -307,4 +308,24 @@ public class CustomerEditMenuTest extends AbstractDriverBaseTest {
         Assert.assertEquals(customerPage.phoneNumberEntityView().getAttribute("value"), "+1" + number);
         Assert.assertEquals(customerPage.emailEntityView().getAttribute("value"), email);
     }
-}
\ No newline at end of file
+
+    @Epic("Customers smoke tests")
+    @Feature("Edit customer")
+    @Test(groups = "smoke")
+    @Description("Delete phone number")
+    public void deletePhoneNumber() {
+        String customerName = ENTITY_NAME;
+        int number = 2015550123;
+        testRestClient.postCustomer(defaultCustomerPrototype(customerName, number));
+        this.customerName = customerName;
+
+        sideBarMenuView.customerBtn().click();
+        customerPage.entity(customerName).click();
+        customerPage.editPencilBtn().click();
+        customerPage.phoneNumberEntityView().click();
+        customerPage.phoneNumberEntityView().sendKeys(Keys.CONTROL + "A" + Keys.BACK_SPACE);
+        customerPage.doneBtnEditView().click();
+
+        Assert.assertTrue(customerPage.phoneNumberEntityView().getAttribute("value").isEmpty(), "Phone field is empty");
+    }
+}
diff --git a/msa/black-box-tests/src/test/java/org/thingsboard/server/msa/ui/utils/EntityPrototypes.java b/msa/black-box-tests/src/test/java/org/thingsboard/server/msa/ui/utils/EntityPrototypes.java
index c131c0fb25..cfb438b59b 100644
--- a/msa/black-box-tests/src/test/java/org/thingsboard/server/msa/ui/utils/EntityPrototypes.java
+++ b/msa/black-box-tests/src/test/java/org/thingsboard/server/msa/ui/utils/EntityPrototypes.java
@@ -43,6 +43,13 @@ public class EntityPrototypes {
         return customer;
     }
 
+    public static Customer defaultCustomerPrototype(String entityName, int number) {
+        Customer customer = new Customer();
+        customer.setTitle(entityName);
+        customer.setPhone("+1" + number);
+        return customer;
+    }
+
     public static RuleChain defaultRuleChainPrototype(String entityName) {
         RuleChain ruleChain = new RuleChain();
         ruleChain.setName(entityName);