diff --git a/modules/account/src/Volo.Abp.Account.Application/Volo/Abp/Account/ProfileAppService.cs b/modules/account/src/Volo.Abp.Account.Application/Volo/Abp/Account/ProfileAppService.cs
index 88d2ccbf5a..9749a607d5 100644
--- a/modules/account/src/Volo.Abp.Account.Application/Volo/Abp/Account/ProfileAppService.cs
+++ b/modules/account/src/Volo.Abp.Account.Application/Volo/Abp/Account/ProfileAppService.cs
@@ -58,6 +58,11 @@ public class ProfileAppService : IdentityAppServiceBase, IProfileAppService
             }
         }
 
+        if (user.PhoneNumber.IsNullOrWhiteSpace() && input.PhoneNumber.IsNullOrWhiteSpace())
+        {
+            input.PhoneNumber = user.PhoneNumber;
+        }
+
         if (!string.Equals(user.PhoneNumber, input.PhoneNumber, StringComparison.InvariantCultureIgnoreCase))
         {
             (await UserManager.SetPhoneNumberAsync(user, input.PhoneNumber)).CheckErrors();
diff --git a/modules/account/test/Volo.Abp.Account.Application.Tests/Volo/Abp/Account/ProfileAppService_Tests.cs b/modules/account/test/Volo.Abp.Account.Application.Tests/Volo/Abp/Account/ProfileAppService_Tests.cs
index d5536c9ad9..62ad4e4bc8 100644
--- a/modules/account/test/Volo.Abp.Account.Application.Tests/Volo/Abp/Account/ProfileAppService_Tests.cs
+++ b/modules/account/test/Volo.Abp.Account.Application.Tests/Volo/Abp/Account/ProfileAppService_Tests.cs
@@ -73,6 +73,36 @@ public class ProfileAppService_Tests : AbpAccountApplicationTestBase
         result.Name.ShouldBe(input.Name);
     }
 
+    [Fact]
+    public async Task Should_Not_UpdatePhoneNumber_If_Input_PhoneNumber_IsNullOrWhiteSpace_Test()
+    {
+        //Arrange
+        _currentUser.Id.Returns(_testData.UserJohnId);
+        _currentUser.IsAuthenticated.Returns(true);
+
+        //Act
+        var result = await _profileAppService.UpdateAsync(new UpdateProfileDto
+        {
+            UserName = CreateRandomString(),
+            Email = CreateRandomEmail(),
+            PhoneNumber = ""
+        });
+
+        //Assert
+        result.PhoneNumber.ShouldBe(null);
+
+        //Act
+        result = await _profileAppService.UpdateAsync(new UpdateProfileDto
+        {
+            UserName = CreateRandomString(),
+            Email = CreateRandomEmail(),
+            PhoneNumber = "123"
+        });
+
+        //Assert
+        result.PhoneNumber.ShouldBe("123");
+    }
+
     [Fact]
     public async Task ChangePasswordAsync_FailsForSamePassword()
     {