diff --git a/frontend/lib/core/services/auth_proxy_service.dart b/frontend/lib/core/services/auth_proxy_service.dart
index 470a4255..ec57a56c 100644
--- a/frontend/lib/core/services/auth_proxy_service.dart
+++ b/frontend/lib/core/services/auth_proxy_service.dart
@@ -74,6 +74,25 @@ class AuthProxyService {
     }
   }
 
+  static Future<Map<String, dynamic>> verifySmsCode(String phoneNumber, String code) async {
+    final url = Uri.parse('$_baseUrl/api/v1/auth/verify-sms');
+    
+    final response = await http.post(
+      url,
+      headers: {'Content-Type': 'application/json'},
+      body: jsonEncode({
+        'phoneNumber': phoneNumber,
+        'code': code,
+      }),
+    );
+
+    if (response.statusCode == 200) {
+      return jsonDecode(response.body);
+    } else {
+      throw Exception('Failed to verify code: ${response.body}');
+    }
+  }
+
   static Future<void> logError(String message) async {
     final url = Uri.parse('$_baseUrl/api/v1/client-log');
     try {
diff --git a/frontend/lib/features/auth/presentation/login_screen.dart b/frontend/lib/features/auth/presentation/login_screen.dart
index cf718054..7487738b 100644
--- a/frontend/lib/features/auth/presentation/login_screen.dart
+++ b/frontend/lib/features/auth/presentation/login_screen.dart
@@ -235,19 +235,35 @@ class _LoginScreenState extends ConsumerState<LoginScreen>
     final phone = _phoneController.text.trim();
     if (phone.isEmpty) return;
 
+    print("[Frontend] SMS 코드 발송 시작. 번호: $phone");
     try {
       await AuthProxyService.sendSms(phone);
+      print("[Frontend] SMS 코드 발송 요청 성공.");
       setState(() {
         _smsSent = true;
       });
     } catch (e) {
+      print("[Frontend] SMS 코드 발송 요청 실패: $e");
       _showError("Failed to send SMS: $e");
     }
   }
 
   Future<void> _handleSmsVerification() async {
-    // For now, just show a success message
-    _showSuccessDialog();
+    final phone = _phoneController.text.trim();
+    final code = _smsCodeController.text.trim();
+    if (phone.isEmpty || code.isEmpty) return;
+
+    print("[Frontend] SMS 코드 검증 시작. 번호: $phone, 코드: $code");
+    try {
+      final result = await AuthProxyService.verifySmsCode(phone, code);
+      final token = result['token'];
+      print("[Frontend] SMS 코드 검증 성공. JWT 수신: $token");
+      // TODO: Handle the JWT token from the result, e.g., result['token']
+      _showSuccessDialog();
+    } catch (e) {
+      print("[Frontend] SMS 코드 검증 실패: $e");
+      _showError("Failed to verify code: $e");
+    }
   }
 
   void _showError(String message) {