diff --git a/apps/pos_device/pos/api/v1/serializers/device.py b/apps/pos_device/pos/api/v1/serializers/device.py
index 13ea4c9..3ebc178 100644
--- a/apps/pos_device/pos/api/v1/serializers/device.py
+++ b/apps/pos_device/pos/api/v1/serializers/device.py
@@ -5,4 +5,4 @@ from rest_framework import serializers
 class DeviceSerializer(serializers.ModelSerializer):
     class Meta:
         model = pos_models.Device
-        fields = '__all__'
+        fields = '__all__'
\ No newline at end of file
diff --git a/apps/pos_device/pos/api/v1/serializers/organization.py b/apps/pos_device/pos/api/v1/serializers/organization.py
deleted file mode 100644
index b4da84d..0000000
--- a/apps/pos_device/pos/api/v1/serializers/organization.py
+++ /dev/null
@@ -1,8 +0,0 @@
-from apps.pos_device import models as pos_models
-from rest_framework import serializers
-
-
-class OrganizationSerializer(serializers.ModelSerializer):
-    class Meta:
-        model = pos_models.Organization
-        fields = ['id', 'name', 'en_name'] 
\ No newline at end of file
diff --git a/apps/pos_device/pos/api/v1/serializers/user.py b/apps/pos_device/pos/api/v1/serializers/user.py
deleted file mode 100644
index 35985e7..0000000
--- a/apps/pos_device/pos/api/v1/serializers/user.py
+++ /dev/null
@@ -1,8 +0,0 @@
-from django.contrib.auth.models import User as pos_models
-from rest_framework import serializers
-
-
-class UserSerializer(serializers.ModelSerializer):
-    class Meta:
-        model = pos_models.User
-        fields = ['id', 'username', 'first_name', 'last_name', 'email', 'mobile', 'phone', 'national_code']
\ No newline at end of file
diff --git a/apps/pos_device/pos/api/v1/viewsets/device.py b/apps/pos_device/pos/api/v1/viewsets/device.py
index 2df4c2d..35023f7 100644
--- a/apps/pos_device/pos/api/v1/viewsets/device.py
+++ b/apps/pos_device/pos/api/v1/viewsets/device.py
@@ -1,6 +1,4 @@
-from apps.pos_device.pos.api.v1.serializers.device import DeviceSerializer
-from apps.pos_device.pos.api.v1.serializers.organization import OrganizationSerializer
-from apps.pos_device.pos.api.v1.serializers.user import UserSerializer
+from apps.pos_device.pos.api.v1.serializers.device import DeviceSerializer , OrganizationSerializer
 from apps.authentication.services.service import get_users_of_organization
 from apps.pos_device.mixins.pos_device_mixin import POSDeviceMixin
 from apps.pos_device import models as pos_models
@@ -80,10 +78,12 @@ class POSDeviceViewSet(viewsets.ModelViewSet, POSDeviceMixin):
                     latitude=headers_data['device-lot'],
                     longitude=headers_data['device-lng'],
                 )
-                
-                org_serializer = OrganizationSerializer(device_owner_org) 
-                users_data = get_users_of_organization(device_owner_org)  
-                users_serializer = UserSerializer(users_data, many=True)
+
+                org_data = {
+                    'id': device_owner_org.id,
+                    'name': device_owner_org.name,
+                    'en_name': device_owner_org.en_name
+                }
 
                 return Response({
                     "message": "login success - session activated",
@@ -92,8 +92,8 @@ class POSDeviceViewSet(viewsets.ModelViewSet, POSDeviceMixin):
                     "password": device.password,
                     "provider": organization.name,
                     "provider_tell": '0214021',
-                    "device_owner": org_serializer.data,
-                    "device_owner_users": users_serializer.data
+                    "device_owner": org_data,
+                    "device_owner_users": get_users_of_organization(device_owner_org)  
                 }, status=status.HTTP_200_OK)
 
             return Response({