diff --git a/src/Infrastructure/BotSharp.Abstraction/Repositories/IBotSharpRepository.cs b/src/Infrastructure/BotSharp.Abstraction/Repositories/IBotSharpRepository.cs
index 4ef68d88..003eddf4 100644
--- a/src/Infrastructure/BotSharp.Abstraction/Repositories/IBotSharpRepository.cs
+++ b/src/Infrastructure/BotSharp.Abstraction/Repositories/IBotSharpRepository.cs
@@ -32,7 +32,7 @@ public interface IBotSharpRepository
     void UpdateUserVerificationCode(string userId, string verficationCode) => throw new NotImplementedException();
     void UpdateUserPassword(string userId, string password) => throw new NotImplementedException();
     void UpdateUserEmail(string userId, string email) => throw new NotImplementedException();
-    void UpdateUserPhone(string userId, string Iphone) => throw new NotImplementedException();
+    void UpdateUserPhone(string userId, string Iphone, string regionCode) => throw new NotImplementedException();
     void UpdateUserIsDisable(string userId, bool isDisable) => throw new NotImplementedException();
     void UpdateUsersIsDisable(List<string> userIds, bool isDisable) => throw new NotImplementedException();
     #endregion
diff --git a/src/Infrastructure/BotSharp.Abstraction/Users/IUserService.cs b/src/Infrastructure/BotSharp.Abstraction/Users/IUserService.cs
index d5547051..8123b272 100644
--- a/src/Infrastructure/BotSharp.Abstraction/Users/IUserService.cs
+++ b/src/Infrastructure/BotSharp.Abstraction/Users/IUserService.cs
@@ -19,7 +19,7 @@ public interface IUserService
     Task<bool> SendVerificationCodeResetPasswordLogin();
     Task<bool> ResetUserPassword(User user);
     Task<bool> ModifyUserEmail(string email);
-    Task<bool> ModifyUserPhone(string phone);
+    Task<bool> ModifyUserPhone(string phone, string regionCode);
     Task<bool> UpdatePassword(string newPassword, string verificationCode);
     Task<DateTime> GetUserTokenExpires();
     Task<bool> UpdateUsersIsDisable(List<string> userIds, bool isDisable);
diff --git a/src/Infrastructure/BotSharp.Core/Users/Services/UserService.cs b/src/Infrastructure/BotSharp.Core/Users/Services/UserService.cs
index 43e2dfb7..a56c57a8 100644
--- a/src/Infrastructure/BotSharp.Core/Users/Services/UserService.cs
+++ b/src/Infrastructure/BotSharp.Core/Users/Services/UserService.cs
@@ -189,7 +189,7 @@ public class UserService : IUserService
         }
 
         var (token, jwt) = BuildToken(record);
-        
+
         return await Task.FromResult(token);
     }
 
@@ -618,8 +618,12 @@ public class UserService : IUserService
         return true;
     }
 
-    public async Task<bool> ModifyUserPhone(string phone)
+    public async Task<bool> ModifyUserPhone(string phone, string regionCode)
     {
+        if (string.IsNullOrWhiteSpace(regionCode))
+        {
+            throw new Exception("regionCode is required");
+        }
         var curUser = await GetMyProfile();
         var db = _services.GetRequiredService<IBotSharpRepository>();
         var record = db.GetUserById(curUser.Id);
@@ -631,6 +635,7 @@ public class UserService : IUserService
         }
 
         record.Phone = phone;
+        record.RegionCode = regionCode;
 
         var hooks = _services.GetServices<IAuthenticationHook>();
         foreach (var hook in hooks)
@@ -638,7 +643,7 @@ public class UserService : IUserService
             await hook.UserUpdating(record);
         }
 
-        db.UpdateUserPhone(record.Id, record.Phone);
+        db.UpdateUserPhone(record.Id, record.Phone, regionCode);
 
         return true;
     }
diff --git a/src/Infrastructure/BotSharp.OpenAPI/Controllers/UserController.cs b/src/Infrastructure/BotSharp.OpenAPI/Controllers/UserController.cs
index 67c0f4e3..253c19be 100644
--- a/src/Infrastructure/BotSharp.OpenAPI/Controllers/UserController.cs
+++ b/src/Infrastructure/BotSharp.OpenAPI/Controllers/UserController.cs
@@ -153,9 +153,9 @@ public class UserController : ControllerBase
     }
 
     [HttpPost("/user/phone/modify")]
-    public async Task<bool> ModifyUserPhone([FromQuery] string phone)
+    public async Task<bool> ModifyUserPhone([FromQuery] string phone, [FromQuery] string regionCode)
     {
-        return await _userService.ModifyUserPhone(phone);
+        return await _userService.ModifyUserPhone(phone, regionCode);
     }
 
     [HttpPost("/user/update/isdisable")]
diff --git a/src/Plugins/BotSharp.Plugin.MongoStorage/Repository/MongoRepository.User.cs b/src/Plugins/BotSharp.Plugin.MongoStorage/Repository/MongoRepository.User.cs
index cf33312c..7b1f66db 100644
--- a/src/Plugins/BotSharp.Plugin.MongoStorage/Repository/MongoRepository.User.cs
+++ b/src/Plugins/BotSharp.Plugin.MongoStorage/Repository/MongoRepository.User.cs
@@ -128,11 +128,12 @@ public partial class MongoRepository
         _dc.Users.UpdateOne(filter, update);
     }
 
-    public void UpdateUserPhone(string userId, string phone)
+    public void UpdateUserPhone(string userId, string phone, string regionCode)
     {
         var filter = Builders<UserDocument>.Filter.Eq(x => x.Id, userId);
         var update = Builders<UserDocument>.Update.Set(x => x.Phone, phone)
-            .Set(x => x.UpdatedTime, DateTime.UtcNow);
+            .Set(x => x.UpdatedTime, DateTime.UtcNow)
+            .Set(x => x.RegionCode, regionCode);
         _dc.Users.UpdateOne(filter, update);
     }