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/IUserIdentity.cs b/src/Infrastructure/BotSharp.Abstraction/Users/IUserIdentity.cs
index 47e70e42..f42b7f25 100644
--- a/src/Infrastructure/BotSharp.Abstraction/Users/IUserIdentity.cs
+++ b/src/Infrastructure/BotSharp.Abstraction/Users/IUserIdentity.cs
@@ -17,4 +17,5 @@ public interface IUserIdentity
     string? EmployeeId { get; }
     string Type { get; }
     string Role { get; }
+    string? RegionCode { get; }
 }
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.Abstraction/Users/Models/User.cs b/src/Infrastructure/BotSharp.Abstraction/Users/Models/User.cs
index 69e41eca..0baa7457 100644
--- a/src/Infrastructure/BotSharp.Abstraction/Users/Models/User.cs
+++ b/src/Infrastructure/BotSharp.Abstraction/Users/Models/User.cs
@@ -21,6 +21,7 @@ public class User
     public string Role { get; set; } = UserRole.User;
     public string? VerificationCode { get; set; }
     public bool Verified { get; set; }
+    public string RegionCode { get; set; } = "CN";
     public string? AffiliateId { get; set; }
     public string? EmployeeId { get; set; }
     public bool IsDisabled { get; set; }
diff --git a/src/Infrastructure/BotSharp.Core/Users/Services/UserIdentity.cs b/src/Infrastructure/BotSharp.Core/Users/Services/UserIdentity.cs
index 6ddeae03..965be261 100644
--- a/src/Infrastructure/BotSharp.Core/Users/Services/UserIdentity.cs
+++ b/src/Infrastructure/BotSharp.Core/Users/Services/UserIdentity.cs
@@ -63,7 +63,7 @@ public class UserIdentity : IUserIdentity
         get
         {
             _contextAccessor.HttpContext.Request.Headers.TryGetValue("User-Language", out var languages);
-            return languages.FirstOrDefault() ?? "en-US"; 
+            return languages.FirstOrDefault() ?? "en-US";
         }
     }
 
@@ -81,4 +81,7 @@ public class UserIdentity : IUserIdentity
 
     [JsonPropertyName("role")]
     public string? Role => _claims?.FirstOrDefault(x => x.Type == ClaimTypes.Role)?.Value;
+
+    [JsonPropertyName("regionCode")]
+    public string? RegionCode => _claims?.FirstOrDefault(x => x.Type == "regionCode")?.Value;
 }
diff --git a/src/Infrastructure/BotSharp.Core/Users/Services/UserService.cs b/src/Infrastructure/BotSharp.Core/Users/Services/UserService.cs
index e565a9b5..dbd8b696 100644
--- a/src/Infrastructure/BotSharp.Core/Users/Services/UserService.cs
+++ b/src/Infrastructure/BotSharp.Core/Users/Services/UserService.cs
@@ -91,7 +91,8 @@ public class UserService : IUserService
         record.Email = user.Email?.ToLower();
         if (!string.IsNullOrWhiteSpace(user.Phone))
         {
-            record.Phone = "+" + Regex.Match(user.Phone, @"\d+").Value;
+            //record.Phone = "+" + Regex.Match(user.Phone, @"\d+").Value;
+            record.Phone = Regex.Match(user.Phone, @"\d+").Value;
         }
         record.Salt = Guid.NewGuid().ToString("N");
         record.Password = Utilities.HashTextMd5($"{user.Password}{record.Salt}");
@@ -188,7 +189,7 @@ public class UserService : IUserService
         }
 
         var (token, jwt) = BuildToken(record);
-        
+
         return await Task.FromResult(token);
     }
 
@@ -266,7 +267,8 @@ public class UserService : IUserService
                         ExternalId = user.ExternalId,
                         Password = user.Password,
                         Type = user.Type,
-                        Role = user.Role
+                        Role = user.Role,
+                        RegionCode = user.RegionCode
                     };
                     await CreateUser(record);
                 }
@@ -316,7 +318,8 @@ public class UserService : IUserService
             new Claim(JwtRegisteredClaimNames.Jti, Guid.NewGuid().ToString()),
             new Claim("phone", user.Phone ?? string.Empty),
             new Claim("affiliateId", user.AffiliateId ?? string.Empty),
-            new Claim("employeeId", user.EmployeeId ?? string.Empty)
+            new Claim("employeeId", user.EmployeeId ?? string.Empty),
+            new Claim("regionCode", user.RegionCode ?? "CN")
         };
 
         var validators = _services.GetServices<IAuthenticationHook>();
@@ -617,8 +620,12 @@ 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);
@@ -630,6 +637,9 @@ public class UserService : IUserService
         }
 
         record.Phone = phone;
+        record.RegionCode = regionCode;
+        record.UserName = phone;
+        record.FirstName = phone;
 
         var hooks = _services.GetServices<IAuthenticationHook>();
         foreach (var hook in hooks)
@@ -637,7 +647,7 @@ 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..cb254f50 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 = "CN")
     {
-        return await _userService.ModifyUserPhone(phone);
+        return await _userService.ModifyUserPhone(phone, regionCode);
     }
 
     [HttpPost("/user/update/isdisable")]
diff --git a/src/Infrastructure/BotSharp.OpenAPI/ViewModels/Users/UserCreationModel.cs b/src/Infrastructure/BotSharp.OpenAPI/ViewModels/Users/UserCreationModel.cs
index b157ef59..c55da5fa 100644
--- a/src/Infrastructure/BotSharp.OpenAPI/ViewModels/Users/UserCreationModel.cs
+++ b/src/Infrastructure/BotSharp.OpenAPI/ViewModels/Users/UserCreationModel.cs
@@ -5,18 +5,18 @@ namespace BotSharp.OpenAPI.ViewModels.Users;
 public class UserCreationModel
 {
     public string? UserName { get; set; }
-    public string FirstName { get; set; } = string.Empty;   
+    public string FirstName { get; set; } = string.Empty;
     public string? LastName { get; set; }
     public string? Email { get; set; }
     public string? Phone { get; set; }
     public string Password { get; set; } = string.Empty;
     public string Type { get; set; } = UserType.Client;
     public string Role { get; set; } = UserRole.User;
-
+    public string RegionCode { get; set; } = "CN";
     public User ToUser()
     {
-        return new User 
-        { 
+        return new User
+        {
             UserName = UserName,
             FirstName = FirstName,
             LastName = LastName,
@@ -24,7 +24,8 @@ public class UserCreationModel
             Phone = Phone,
             Password = Password,
             Role = Role,
-            Type = Type
+            Type = Type,
+            RegionCode = RegionCode
         };
     }
 }
diff --git a/src/Infrastructure/BotSharp.OpenAPI/ViewModels/Users/UserResetPasswordModel.cs b/src/Infrastructure/BotSharp.OpenAPI/ViewModels/Users/UserResetPasswordModel.cs
index 8a58820a..7837c916 100644
--- a/src/Infrastructure/BotSharp.OpenAPI/ViewModels/Users/UserResetPasswordModel.cs
+++ b/src/Infrastructure/BotSharp.OpenAPI/ViewModels/Users/UserResetPasswordModel.cs
@@ -1,5 +1,3 @@
-using System.Data;
-
 namespace BotSharp.OpenAPI.ViewModels.Users;
 
 public class UserResetPasswordModel
@@ -8,6 +6,7 @@ public class UserResetPasswordModel
     public string? Phone { get; set; }
     public string Password { get; set; } = string.Empty;
     public string VerificationCode { get; set; }
+    public string RegionCode { get; set; } = "CN";
 
     public User ToUser()
     {
@@ -16,7 +15,8 @@ public class UserResetPasswordModel
             Email = Email,
             Phone = Phone,
             Password = Password,
-            VerificationCode = VerificationCode
+            VerificationCode = VerificationCode,
+            RegionCode = RegionCode
         };
     }
 }
diff --git a/src/Infrastructure/BotSharp.OpenAPI/ViewModels/Users/UserViewModel.cs b/src/Infrastructure/BotSharp.OpenAPI/ViewModels/Users/UserViewModel.cs
index 393bbb86..df60c26c 100644
--- a/src/Infrastructure/BotSharp.OpenAPI/ViewModels/Users/UserViewModel.cs
+++ b/src/Infrastructure/BotSharp.OpenAPI/ViewModels/Users/UserViewModel.cs
@@ -47,7 +47,7 @@ public class UserViewModel
             FirstName = user.FirstName,
             LastName = user.LastName,
             Email = user.Email,
-            Phone = user.Phone,
+            Phone = user.Phone.Substring(0, 3) == "+86" ? user.Phone.Substring(3) : user.Phone,
             Type = user.Type,
             Role = user.Role,
             Source = user.Source,
diff --git a/src/Plugins/BotSharp.Plugin.MongoStorage/Collections/UserDocument.cs b/src/Plugins/BotSharp.Plugin.MongoStorage/Collections/UserDocument.cs
index a3d84e7d..c6f42eab 100644
--- a/src/Plugins/BotSharp.Plugin.MongoStorage/Collections/UserDocument.cs
+++ b/src/Plugins/BotSharp.Plugin.MongoStorage/Collections/UserDocument.cs
@@ -18,6 +18,7 @@ public class UserDocument : MongoBase
     public string Role { get; set; } = null!;
     public string? VerificationCode { get; set; }
     public bool Verified { get; set; }
+    public string? RegionCode { get; set; }
     public string? AffiliateId { get; set; }
     public string? EmployeeId { get; set; }
     public bool IsDisabled { get; set; }
@@ -45,6 +46,7 @@ public class UserDocument : MongoBase
             IsDisabled = IsDisabled,
             VerificationCode = VerificationCode,
             Verified = Verified,
+            RegionCode = RegionCode,
         };
     }
 }
\ No newline at end of file
diff --git a/src/Plugins/BotSharp.Plugin.MongoStorage/Repository/MongoRepository.User.cs b/src/Plugins/BotSharp.Plugin.MongoStorage/Repository/MongoRepository.User.cs
index 3281eed0..33cd16e8 100644
--- a/src/Plugins/BotSharp.Plugin.MongoStorage/Repository/MongoRepository.User.cs
+++ b/src/Plugins/BotSharp.Plugin.MongoStorage/Repository/MongoRepository.User.cs
@@ -13,7 +13,12 @@ public partial class MongoRepository
 
     public User? GetUserByPhone(string phone)
     {
-        var user = _dc.Users.AsQueryable().FirstOrDefault(x => x.Phone == phone && x.Type != UserType.Affiliate);
+        string phoneSecond = string.Empty;
+        if (phone.Substring(0, 3) != "+86")
+        {
+            phoneSecond = $"+86{phone}";
+        }
+        var user = _dc.Users.AsQueryable().FirstOrDefault(x => (x.Phone == phone || x.Phone == phoneSecond) && x.Type != UserType.Affiliate);
         return user != null ? user.ToUser() : null;
     }
 
@@ -70,6 +75,7 @@ public partial class MongoRepository
             Type = user.Type,
             VerificationCode = user.VerificationCode,
             Verified = user.Verified,
+            RegionCode = user.RegionCode,
             AffiliateId = user.AffiliateId,
             EmployeeId = user.EmployeeId,
             IsDisabled = user.IsDisabled,
@@ -88,7 +94,9 @@ public partial class MongoRepository
             .Set(x => x.Phone, user.Phone)
             .Set(x => x.Salt, user.Salt)
             .Set(x => x.Password, user.Password)
-            .Set(x => x.VerificationCode, user.VerificationCode);
+            .Set(x => x.VerificationCode, user.VerificationCode)
+            .Set(x => x.UpdatedTime, DateTime.UtcNow)
+            .Set(x => x.RegionCode, user.RegionCode);
         _dc.Users.UpdateOne(filter, update);
     }
 
@@ -125,11 +133,14 @@ 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)
+            .Set(x => x.UserName, phone)
+            .Set(x => x.FirstName, phone);
         _dc.Users.UpdateOne(filter, update);
     }