diff --git a/src/application/domain/exceptions/__init__.py b/src/application/domain/exceptions/__init__.py
index 6d6ca18..03368ee 100644
--- a/src/application/domain/exceptions/__init__.py
+++ b/src/application/domain/exceptions/__init__.py
@@ -1 +1,11 @@
-from src.application.domain.exceptions.application_exceptions import ApplicationException
\ No newline at end of file
+from src.application.domain.exceptions.application_exceptions import (
+    ApplicationException,
+    BadRequestException,
+    ConflictException,
+    ForbiddenException,
+    InternalException,
+    NotFoundException,
+    ServiceUnavailableException,
+    TooManyRequestsException,
+    UnauthorizedException,
+)
diff --git a/src/application/domain/exceptions/application_exceptions.py b/src/application/domain/exceptions/application_exceptions.py
index 5006dee..03cecd3 100644
--- a/src/application/domain/exceptions/application_exceptions.py
+++ b/src/application/domain/exceptions/application_exceptions.py
@@ -1,4 +1,5 @@
 from __future__ import annotations
+
 from typing import Mapping
 
 
@@ -14,5 +15,45 @@ class ApplicationException(Exception):
         self.message = message
         self.headers = headers
 
-    def __str__(self):
-        return f"{self.status_code}: {self.message}"
+    def __str__(self) -> str:
+        return f'{self.status_code}: {self.message}'
+
+
+class BadRequestException(ApplicationException):
+    def __init__(self, message: str, headers: Mapping[str, str] | None = None):
+        super().__init__(400, message, headers)
+
+
+class UnauthorizedException(ApplicationException):
+    def __init__(self, message: str = 'Unauthorized', headers: Mapping[str, str] | None = None):
+        super().__init__(401, message, headers)
+
+
+class ForbiddenException(ApplicationException):
+    def __init__(self, message: str = 'Forbidden', headers: Mapping[str, str] | None = None):
+        super().__init__(403, message, headers)
+
+
+class NotFoundException(ApplicationException):
+    def __init__(self, message: str = 'Not found', headers: Mapping[str, str] | None = None):
+        super().__init__(404, message, headers)
+
+
+class ConflictException(ApplicationException):
+    def __init__(self, message: str, headers: Mapping[str, str] | None = None):
+        super().__init__(409, message, headers)
+
+
+class TooManyRequestsException(ApplicationException):
+    def __init__(self, message: str, headers: Mapping[str, str] | None = None):
+        super().__init__(429, message, headers)
+
+
+class ServiceUnavailableException(ApplicationException):
+    def __init__(self, message: str, headers: Mapping[str, str] | None = None):
+        super().__init__(503, message, headers)
+
+
+class InternalException(ApplicationException):
+    def __init__(self, message: str = 'Internal Server Error', headers: Mapping[str, str] | None = None):
+        super().__init__(500, message, headers)
diff --git a/src/infrastructure/database/repositories/user_repository.py b/src/infrastructure/database/repositories/user_repository.py
index 6f8c4ee..d87848f 100644
--- a/src/infrastructure/database/repositories/user_repository.py
+++ b/src/infrastructure/database/repositories/user_repository.py
@@ -1,10 +1,9 @@
 from __future__ import annotations
-from fastapi import status
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.exc import SQLAlchemyError
 from src.application.contracts import ILogger
-from src.application.domain.exceptions import ApplicationException
+from src.application.domain.exceptions import ApplicationException, BadRequestException, InternalException, NotFoundException
 from src.application.abstractions.repositories import IUserRepository
 from src.application.domain.entities import UserEntity
 from src.infrastructure.database.models import UserModel
@@ -27,7 +26,7 @@ class UserRepository(IUserRepository):
         user: UserModel | None = result.scalar_one_or_none()
         if user is None:
             self._logger.warning(f'User not found with user_id {user_id}')
-            raise ApplicationException(status_code=status.HTTP_404_NOT_FOUND, message='User not found')
+            raise NotFoundException(message='User not found')
         return user
 
     @staticmethod
@@ -60,7 +59,7 @@ class UserRepository(IUserRepository):
             raise
         except SQLAlchemyError as exception:
             self._logger.exception(str(exception))
-            raise ApplicationException(status_code=status.HTTP_500_INTERNAL_SERVER_ERROR, message=f'Database error: {str(exception)}')
+            raise InternalException(message=f'Database error: {str(exception)}')
 
     async def _update_field(self, user_id: str, **fields: object) -> UserEntity:
         try:
@@ -74,7 +73,7 @@ class UserRepository(IUserRepository):
             raise
         except SQLAlchemyError as exception:
             self._logger.exception(str(exception))
-            raise ApplicationException(status_code=status.HTTP_500_INTERNAL_SERVER_ERROR, message=f'Database error: {str(exception)}')
+            raise InternalException(message=f'Database error: {str(exception)}')
 
     async def set_phone(self, user_id: str, phone: str) -> UserEntity:
         return await self._update_field(user_id, phone=phone)
@@ -83,10 +82,7 @@ class UserRepository(IUserRepository):
         allowed = {'passport_data', 'inn', 'erc20'}
         payload = {k: v for k, v in fields.items() if k in allowed and v is not None}
         if not payload:
-            raise ApplicationException(
-                status_code=status.HTTP_400_BAD_REQUEST,
-                message='No identity fields to update',
-            )
+            raise BadRequestException(message='No identity fields to update')
         return await self._update_field(user_id, **payload)
 
     async def set_encrypted_mnemonic(self, user_id: str, encrypted_mnemonic: str) -> UserEntity:
@@ -100,7 +96,7 @@ class UserRepository(IUserRepository):
             raise
         except SQLAlchemyError as exception:
             self._logger.exception(str(exception))
-            raise ApplicationException(status_code=status.HTTP_500_INTERNAL_SERVER_ERROR, message=f'Database error: {str(exception)}')
+            raise InternalException(message=f'Database error: {str(exception)}')
 
     async def set_password(self, user_id: str, password_hash: str) -> UserEntity:
         return await self._update_field(user_id, password_hash=password_hash)
@@ -121,4 +117,4 @@ class UserRepository(IUserRepository):
             return result.scalar_one_or_none() is not None
         except SQLAlchemyError as exception:
             self._logger.exception(str(exception))
-            raise ApplicationException(status_code=status.HTTP_500_INTERNAL_SERVER_ERROR, message=f'Database error: {str(exception)}')
+            raise InternalException(message=f'Database error: {str(exception)}')
diff --git a/src/main.py b/src/main.py
index 04681ce..6cf14ed 100644
--- a/src/main.py
+++ b/src/main.py
@@ -2,18 +2,25 @@ from __future__ import annotations
 from contextlib import asynccontextmanager
 import secrets
 from typing import AsyncGenerator
-from fastapi import Depends, FastAPI, status
+from fastapi import Depends, FastAPI
 from fastapi.openapi.docs import get_redoc_html, get_swagger_ui_html
 from fastapi.responses import HTMLResponse
 from fastapi.security import HTTPBasic, HTTPBasicCredentials
 from starlette.middleware.cors import CORSMiddleware
-from src.application.domain.exceptions import ApplicationException
+from starlette.exceptions import HTTPException
+from fastapi.exceptions import RequestValidationError
+from src.application.domain.exceptions import ApplicationException, UnauthorizedException
 from src.infrastructure.cache import create_redis_client
 from src.infrastructure.vault import JwtKeyStore, start_jwt_keys_scheduler
 from src.infrastructure.utils import generate_instance_id
 from src.infrastructure.logger import logger
 from src.infrastructure.config import settings
-from src.presentation.handlers import application_exception_handler, unhandled_exception_handler
+from src.presentation.handlers import (
+    application_exception_handler,
+    http_exception_handler,
+    unhandled_exception_handler,
+    validation_exception_handler,
+)
 from src.presentation.middleware import TraceIDMiddleware, SecurityHeadersMiddleware
 from src.presentation.routing import me_router
 
@@ -24,8 +31,7 @@ async def verify_credentials(credentials: HTTPBasicCredentials = Depends(securit
     user_ok = secrets.compare_digest(credentials.username, settings.DOCS_USERNAME)
     pass_ok = secrets.compare_digest(credentials.password, settings.DOCS_PASSWORD)
     if not (user_ok and pass_ok):
-        raise ApplicationException(
-            status_code=status.HTTP_401_UNAUTHORIZED,
+        raise UnauthorizedException(
             message='Unauthorized',
             headers={'WWW-Authenticate': 'Basic'},
         )
@@ -78,6 +84,8 @@ app: FastAPI = FastAPI(
     },
 )
 
+app.add_exception_handler(RequestValidationError, validation_exception_handler)
+app.add_exception_handler(HTTPException, http_exception_handler)
 app.add_exception_handler(ApplicationException, application_exception_handler)
 app.add_exception_handler(Exception, unhandled_exception_handler)
 
diff --git a/src/presentation/decorators/auth.py b/src/presentation/decorators/auth.py
index ba8b030..b1ea930 100644
--- a/src/presentation/decorators/auth.py
+++ b/src/presentation/decorators/auth.py
@@ -1,7 +1,7 @@
 from fastapi import Depends, Request
 from fastapi.security.utils import get_authorization_scheme_param
 from src.application.contracts import IJwtService
-from src.application.domain.exceptions import ApplicationException
+from src.application.domain.exceptions import UnauthorizedException
 from src.application.domain.dto import AccessTokenPayload, AuthContext
 from src.presentation.dependencies import get_jwt_service
 
@@ -27,10 +27,10 @@ async def require_access_token(
 ) -> AuthContext:
     token = _extract_access_token(request)
     if not token:
-        raise ApplicationException(status_code=401, message='Not authenticated')
+        raise UnauthorizedException(message='Not authenticated')
 
     payload: AccessTokenPayload = await jwt_service.decode_access_token(token)
     if payload.type != 'access':
-        raise ApplicationException(status_code=401, message='Invalid token type')
+        raise UnauthorizedException(message='Invalid token type')
 
     return AuthContext(user_id=payload.sub, sid=payload.sid, token=payload)
diff --git a/src/presentation/handlers/__init__.py b/src/presentation/handlers/__init__.py
index cb6cbad..e9ca9c5 100644
--- a/src/presentation/handlers/__init__.py
+++ b/src/presentation/handlers/__init__.py
@@ -1,2 +1,4 @@
 from src.presentation.handlers.unhandled_handler import unhandled_exception_handler
-from src.presentation.handlers.application_handler import application_exception_handler
\ No newline at end of file
+from src.presentation.handlers.application_handler import application_exception_handler
+from src.presentation.handlers.http_exception_handler import http_exception_handler
+from src.presentation.handlers.validation_handler import validation_exception_handler
diff --git a/src/presentation/handlers/http_exception_handler.py b/src/presentation/handlers/http_exception_handler.py
new file mode 100644
index 0000000..84510d2
--- /dev/null
+++ b/src/presentation/handlers/http_exception_handler.py
@@ -0,0 +1,11 @@
+from fastapi import Request
+from fastapi.responses import ORJSONResponse
+from starlette.exceptions import HTTPException
+
+
+async def http_exception_handler(_request: Request, exc: HTTPException) -> ORJSONResponse:
+    return ORJSONResponse(
+        status_code=exc.status_code,
+        content={'detail': exc.detail},
+        headers=dict(exc.headers) if exc.headers else None,
+    )
diff --git a/src/presentation/handlers/validation_handler.py b/src/presentation/handlers/validation_handler.py
new file mode 100644
index 0000000..155ac5d
--- /dev/null
+++ b/src/presentation/handlers/validation_handler.py
@@ -0,0 +1,10 @@
+from fastapi import Request
+from fastapi.exceptions import RequestValidationError
+from fastapi.responses import ORJSONResponse
+
+
+async def validation_exception_handler(_request: Request, exc: RequestValidationError) -> ORJSONResponse:
+    return ORJSONResponse(
+        status_code=422,
+        content={'detail': exc.errors()},
+    )
diff --git a/src/presentation/routing/__init__.py b/src/presentation/routing/__init__.py
index b151a36..d58b4d1 100644
--- a/src/presentation/routing/__init__.py
+++ b/src/presentation/routing/__init__.py
@@ -1,13 +1,12 @@
 from fastapi import APIRouter
 from src.presentation.routing.account import account_router
+from src.presentation.routing.account_settings import account_settings_router
 
 
 me_router = APIRouter(prefix='/me', tags=['Account'])
 
 me_router.include_router(account_router)
-
-# from src.presentation.routing.account_settings import account_settings_router
-# me_router.include_router(account_settings_router)
+me_router.include_router(account_settings_router)
 
 # from src.presentation.routing.devices import devices_router
 # me_devices_router = APIRouter(prefix='/me', tags=['Devices'])
diff --git a/src/presentation/schemas/phone.py b/src/presentation/schemas/phone.py
index 40b94f7..1a81088 100644
--- a/src/presentation/schemas/phone.py
+++ b/src/presentation/schemas/phone.py
@@ -1,6 +1,5 @@
 import re
 from pydantic import BaseModel, field_validator
-from src.application.domain.exceptions import ApplicationException
 
 
 class SetPhoneRequest(BaseModel):
@@ -12,6 +11,6 @@ class SetPhoneRequest(BaseModel):
         cleaned = re.sub(r'[\s\-\(\)]', '', v)
         pattern = r'^(\+7|8)\d{10}$'
         if not re.match(pattern, cleaned):
-            raise ApplicationException(message='Invalid Russian phone number', status_code=429)
+            raise ValueError('Invalid Russian phone number')
         normalized = '+7' + cleaned[-10:]
-        return normalized
\ No newline at end of file
+        return normalized