diff --git a/loko/interventions/permissions.py b/loko/interventions/permissions.py
index 2ca7b03..7b83232 100644
--- a/loko/interventions/permissions.py
+++ b/loko/interventions/permissions.py
@@ -1471,10 +1471,14 @@ def get_allowed_transitions(request, intervention):
 
 def can_edit_note(user, user_config, note):
     """
-    Règle:
-      - Admin: peut tout modifier.
-      - Thématique 'structures': l'auteur OU rôle manager/external_manager (pas de contrainte horaire).
-      - Sinon: uniquement l'auteur ET la note a été créée il y a < 1h.
+    Règles de modification et suppression d'une note :
+      - Admin : peut tout modifier et supprimer sans restriction.
+      - Externes (non is_intern) :
+          * Autorisés jusqu'au statut 'traité' (status_order <= STATUS_ORDERS['processed'], soit <= 31).
+          * Auteur de la note OU rôle 'external_manager' (hors notes rédigées par des internes).
+      - Internes (is_intern) :
+          * Autorisés jusqu'au statut 'validé' (status_order <= STATUS_ORDERS['validated'], soit <= 51).
+          * Auteur de la note OU rôle 'manager'.
     """
     if not user.is_authenticated or user_config is None:
         return False
@@ -1483,29 +1487,42 @@ def can_edit_note(user, user_config, note):
     if user_config.roles.filter(name='admin').exists():
         return True
 
-    # 2) Thématique 'structures'
     intervention = getattr(note, 'intervention', None)
-    thematic_code = getattr(getattr(intervention, 'thematic', None), 'code', None)
-    if thematic_code == 'structures':
-        # Auteur OU rôle manager/external_manager
+    if intervention is None:
+        return False
+
+    status_order = getattr(intervention, 'status_order', None)
+    if status_order is None:
+        status_order = STATUS_ORDERS.get(intervention.status, 0)
+
+    # 2) Utilisateurs internes (commune / régie / gestionnaires)
+    if user_config.is_intern:
+        # Autorisé jusqu'au statut 'validé' (inclus)
+        if status_order > STATUS_ORDERS.get('validated', 51):
+            return False
+        # Auteur OU rôle manager
         if note.note_author_id == user.id:
             return True
-        if user_config.roles.filter(name__in=['manager', 'external_manager']).exists():
+        if user_config.roles.filter(name='manager').exists():
             return True
         return False
 
-    # 3) Auteur + moins d'une heure (autres thématiques)
-    if note.note_author_id != user.id:
+    # 3) Utilisateurs externes (prestataires / soumissionnaires)
+    # Autorisé jusqu'au statut 'traité' (inclus)
+    if status_order > STATUS_ORDERS.get('processed', 31):
         return False
 
-    created_at = getattr(note, 'note_time', None) or getattr(note, 'created_at', None)
-    if created_at is None:
-        return False
+    # Auteur
+    if note.note_author_id == user.id:
+        return True
 
-    if timezone.is_naive(created_at):
-        created_at = timezone.make_aware(created_at, timezone.get_current_timezone())
+    # Rôle external_manager (hors notes rédigées par des agents internes)
+    if user_config.roles.filter(name='external_manager').exists():
+        if note.note_author and hasattr(note.note_author, 'config') and getattr(note.note_author.config, 'is_intern', False):
+            return False
+        return True
 
-    return (timezone.now() - created_at) <= timedelta(hours=1)
+    return False
 
 
 
diff --git a/loko/interventions/templates/interventions/detail/card_notes.html b/loko/interventions/templates/interventions/detail/card_notes.html
index 4de66c4..d09a65e 100644
--- a/loko/interventions/templates/interventions/detail/card_notes.html
+++ b/loko/interventions/templates/interventions/detail/card_notes.html
@@ -31,7 +31,7 @@
                 
                 {% for note in notes %}
                     <div id="note-container-{{ note.id }}"
-                        class="note-item py-3 {% if not forloop.last %}border-bottom{% endif %} {% if note.id in editable_note_ids and can_edit_notes %}editable-note{% endif %}"
+                        class="note-item py-3 {% if not forloop.last %}border-bottom{% endif %} {% if note.id in editable_note_ids %}editable-note{% endif %}"
                         data-note-id="{{ note.id }}"
                         data-note-content="{{ note.content|urlencode }}"
                         data-note-author-id="{{ note.note_author_id }}"
@@ -62,7 +62,7 @@
                                     </div>
                                     <p class="mb-0 note-text">{{ note.content|safe|linebreaksbr }}</p>
                                 </div>
-                                {% if note.id in editable_note_ids and can_edit_notes %}
+                                {% if note.id in editable_note_ids %}
                                     <div class="note-actions ms-auto">
                                         <button type="button" class="btn btn-link text-danger p-0 delete-note-btn" data-note-id="{{ note.id }}" aria-label="{% translate "Supprimer la note" %}" style="display: none;">
                                             <i class="bi bi-trash fs-6"></i>
@@ -73,7 +73,7 @@
                         </div>
                         
                         <!-- Edit mode (shown only in CMS edit mode for editable notes) -->
-                        {% if note.id in editable_note_ids and can_edit_notes %}
+                        {% if note.id in editable_note_ids %}
                         <div class="note-edit" style="display: none;">
                             <div class="mb-2">
                                 <label class="form-label small fw-bold">{% translate "Type de note" %}</label>
diff --git a/loko/interventions/templates/interventions/detail/card_notes_documents.html b/loko/interventions/templates/interventions/detail/card_notes_documents.html
index 3b53a97..8d63afa 100644
--- a/loko/interventions/templates/interventions/detail/card_notes_documents.html
+++ b/loko/interventions/templates/interventions/detail/card_notes_documents.html
@@ -90,7 +90,7 @@
                                     <div class="notes-list {% if block.documents %}border-top pt-3{% endif %}">
                                         {% for note in block.notes %}
                                             <div id="note-container-{{ note.id }}"
-                                                class="note-item py-2 {% if not forloop.last %}border-bottom{% endif %} {% if note.id in editable_note_ids and can_edit_notes %}editable-note{% endif %}"
+                                                class="note-item py-2 {% if not forloop.last %}border-bottom{% endif %} {% if note.id in editable_note_ids %}editable-note{% endif %}"
                                                 data-note-id="{{ note.id }}"
                                                 data-note-content="{{ note.content|urlencode }}"
                                                 data-note-author-id="{{ note.note_author_id }}"
@@ -121,7 +121,7 @@
                                                             </div>
                                                             <p class="mb-0">{{ note.content|linebreaksbr }}</p>
                                                         </div>
-                                                        {% if note.id in editable_note_ids and can_edit_notes %}
+                                                        {% if note.id in editable_note_ids %}
                                                         <div class="note-actions cms-note-actions" style="display: none;">
                                                             <button type="button" class="btn btn-sm btn-outline-primary btn-edit-note me-1" title="{% translate 'Modifier la note' %}">
                                                                 <i class="bi bi-pencil"></i>
@@ -135,7 +135,7 @@
                                                 </div>
 
                                                 <!-- Edit mode (shown only in CMS edit mode for editable notes) -->
-                                                {% if note.id in editable_note_ids and can_edit_notes %}
+                                                {% if note.id in editable_note_ids %}
                                                 <div class="note-edit" style="display: none;">
                                                     <div class="mb-2">
                                                         <label class="form-label small fw-bold">{% translate "Type de note" %}</label>
diff --git a/loko/interventions/templates/interventions/intervention_detail_mobile.html b/loko/interventions/templates/interventions/intervention_detail_mobile.html
index dd0a7cf..001d712 100644
--- a/loko/interventions/templates/interventions/intervention_detail_mobile.html
+++ b/loko/interventions/templates/interventions/intervention_detail_mobile.html
@@ -727,7 +727,7 @@
                                                         </div>
                                                         <p class="mb-0 small">{{ note.content|safe|linebreaksbr }}</p>
                                                     </div>
-                                                    {% if note.id in editable_note_ids and can_edit_notes %}
+                                                    {% if note.id in editable_note_ids %}
                                                         <div class="note-actions d-flex flex-column align-items-center gap-2 ms-auto">
                                                             <button type="button" class="btn btn-link text-primary p-0 edit-note-btn"
                                                                     data-note-id="{{ note.id }}" aria-label="{% translate "Modifier la note" %}">
diff --git a/loko/interventions/tests/test_timeline_history.py b/loko/interventions/tests/test_timeline_history.py
index faa734d..ab1cae7 100644
--- a/loko/interventions/tests/test_timeline_history.py
+++ b/loko/interventions/tests/test_timeline_history.py
@@ -519,5 +519,192 @@ class TimelineHistoryTests(TestCase):
         self.assertContains(response, 'history-status-circle')
         self.assertContains(response, 'history-status-transition')
 
+    def test_can_edit_note_status_flexibility_for_internals_and_externals(self):
+        """Test note edit/delete flexibility:
+        - Externals can edit/delete up to 'processed' (status_order <= 31)
+        - Internals can edit/delete up to 'validated' (status_order <= 51)
+        - Externals cannot edit internal notes
+        - Admin can always edit
+        """
+        from interventions.permissions import can_edit_note
 
+        User = get_user_model()
+        ext_user = User.objects.create_user(username='ext_author', password='pwd')
+        ext_cfg = UserConfig.objects.create(user=ext_user, is_intern=False)
+        role_tech, _ = Role.objects.get_or_create(name='technician')
+        ext_cfg.roles.add(role_tech)
 
+        int_user = self.user  # is_intern=True, admin
+        int_agent = User.objects.create_user(username='int_agent', password='pwd')
+        int_cfg = UserConfig.objects.create(user=int_agent, is_intern=True)
+
+        int_manager = User.objects.create_user(username='int_manager', password='pwd')
+        mgr_cfg = UserConfig.objects.create(user=int_manager, is_intern=True)
+        role_mgr, _ = Role.objects.get_or_create(name='manager')
+        mgr_cfg.roles.add(role_mgr)
+
+        # Note créée par l'externe
+        ext_note = InterventionNote.objects.create(
+            intervention=self.intervention,
+            content='Note de l\'externe',
+            note_type='comment',
+            note_author=ext_user,
+            note_time=timezone.now()
+        )
+
+        # Note créée par l'interne
+        int_note = InterventionNote.objects.create(
+            intervention=self.intervention,
+            content='Note de l\'interne',
+            note_type='comment',
+            note_author=int_agent,
+            note_time=timezone.now()
+        )
+
+        # 1. Statut initial (in_preparation, order=1 <= 31)
+        self.intervention.status = 'in_preparation'
+        self.intervention.status_order = 1
+        self.intervention.save()
+
+        # L'externe peut modifier sa propre note
+        self.assertTrue(can_edit_note(ext_user, ext_cfg, ext_note))
+        # L'externe NE PEUT PAS modifier la note de l'agent interne
+        self.assertFalse(can_edit_note(ext_user, ext_cfg, int_note))
+        # L'agent interne peut modifier sa propre note
+        self.assertTrue(can_edit_note(int_agent, int_cfg, int_note))
+        # Le manager interne peut modifier les notes
+        self.assertTrue(can_edit_note(int_manager, mgr_cfg, ext_note))
+
+        # 2. Statut 'processed' (Traité, order=31)
+        self.intervention.status = 'processed'
+        self.intervention.status_order = 31
+        self.intervention.save()
+
+        # Jusqu'à 'traité', l'externe peut toujours modifier sa note
+        self.assertTrue(can_edit_note(ext_user, ext_cfg, ext_note))
+        # L'interne peut modifier sa note
+        self.assertTrue(can_edit_note(int_agent, int_cfg, int_note))
+
+        # 3. Statut 'to_be_corrected' (A corriger, order=41 > 31)
+        self.intervention.status = 'to_be_corrected'
+        self.intervention.status_order = 41
+        self.intervention.save()
+
+        # Après 'traité', l'externe NE PEUT PLUS modifier sa note
+        self.assertFalse(can_edit_note(ext_user, ext_cfg, ext_note))
+        # Mais l'interne PEUT TOUJOURS modifier sa note (car <= 51)
+        self.assertTrue(can_edit_note(int_agent, int_cfg, int_note))
+
+        # 4. Statut 'validated' (Validé, order=51)
+        self.intervention.status = 'validated'
+        self.intervention.status_order = 51
+        self.intervention.save()
+
+        # L'externe ne peut pas
+        self.assertFalse(can_edit_note(ext_user, ext_cfg, ext_note))
+        # Jusqu'à 'validé', l'interne peut toujours modifier
+        self.assertTrue(can_edit_note(int_agent, int_cfg, int_note))
+        self.assertTrue(can_edit_note(int_manager, mgr_cfg, int_note))
+
+        # 5. Statut 'closed' (Finalisé, order=71 > 51)
+        self.intervention.status = 'closed'
+        self.intervention.status_order = 71
+        self.intervention.save()
+
+        # Ni l'externe ni l'interne ne peuvent modifier
+        self.assertFalse(can_edit_note(ext_user, ext_cfg, ext_note))
+        self.assertFalse(can_edit_note(int_agent, int_cfg, int_note))
+        self.assertFalse(can_edit_note(int_manager, mgr_cfg, int_note))
+        # Sauf l'admin
+        self.assertTrue(can_edit_note(int_user, self.user_config, int_note))
+
+        # 6. Test direct des endpoints AJAX de modification et suppression
+        # Au statut 'processed' (31) : l'externe peut supprimer sa note
+        self.intervention.status = 'processed'
+        self.intervention.status_order = 31
+        self.intervention.save()
+
+        self.client.login(username='ext_author', password='pwd')
+        del_url = reverse('interventions:intervention_delete_note', args=[self.intervention.id, ext_note.id])
+        res = self.client.post(del_url)
+        self.assertEqual(res.status_code, 200)
+        self.assertFalse(InterventionNote.objects.filter(id=ext_note.id).exists())
+
+        # Création d'une nouvelle note externe
+        new_ext_note = InterventionNote.objects.create(
+            intervention=self.intervention,
+            content='Nouvelle note externe',
+            note_type='comment',
+            note_author=ext_user,
+            note_time=timezone.now()
+        )
+
+        # Au statut 'to_be_corrected' (41 > 31) : l'externe ne peut plus modifier ni supprimer
+        self.intervention.status = 'to_be_corrected'
+        self.intervention.status_order = 41
+        self.intervention.save()
+
+        upd_url = reverse('interventions:intervention_update_note', args=[self.intervention.id, new_ext_note.id])
+        res = self.client.post(upd_url, {'content': 'Modification interdite', 'note_type': 'comment'})
+        self.assertEqual(res.status_code, 403)
+
+        del_url = reverse('interventions:intervention_delete_note', args=[self.intervention.id, new_ext_note.id])
+        res = self.client.post(del_url)
+        self.assertEqual(res.status_code, 403)
+        self.assertTrue(InterventionNote.objects.filter(id=new_ext_note.id).exists())
+
+        # Au statut 'validated' (51) : l'interne peut toujours modifier sa note
+        self.intervention.status = 'validated'
+        self.intervention.status_order = 51
+        self.intervention.save()
+
+        self.client.login(username='int_agent', password='pwd')
+        upd_url = reverse('interventions:intervention_update_note', args=[self.intervention.id, int_note.id])
+        res = self.client.post(upd_url, {'content': 'Modification autorisée interne', 'note_type': 'comment'})
+        self.assertEqual(res.status_code, 200)
+        int_note.refresh_from_db()
+        self.assertEqual(int_note.content, 'Modification autorisée interne')
+
+    def test_mobile_note_events_recorded_in_timeline(self):
+        """Test that notes saved or updated via mobile endpoints create timeline events."""
+        self.client.login(username='agent_test', password='secret_password')
+
+        # 1. Création d'une note via save_intervention_mobile_ajax
+        url = reverse('interventions:save_operations_ajax', args=[self.intervention.id])
+        # Note: on utilise la vue mobile AJAX save_intervention_mobile_ajax
+        # Vérifions son url
+        mobile_ajax_url = f"/interventions/{self.intervention.id}/mobile/"
+        post_data = {
+            'content': 'Note créée depuis mobile',
+            'note_type': 'comment',
+            'note_id': '',
+        }
+        response = self.client.post(f"/interventions/{self.intervention.id}/mobile/", post_data)
+        # Vérifier qu'un événement note a été consigné
+        note_event = self.intervention.events.filter(event_type='note').last()
+        self.assertIsNotNone(note_event)
+        self.assertTrue('Note ajoutée' in note_event.event_description or 'Note added' in note_event.event_description)
+        self.assertEqual(note_event.field_changes.get('content', {}).get('new'), 'Note créée depuis mobile')
+
+        # 2. Modification de la note créée via save_intervention_mobile_ajax
+        created_note = InterventionNote.objects.filter(content='Note créée depuis mobile').first()
+        self.assertIsNotNone(created_note)
+        update_data = {
+            'content': 'Note mise à jour depuis mobile',
+            'note_type': 'comment',
+            'note_id': str(created_note.id),
+        }
+        self.client.post(f"/interventions/{self.intervention.id}/mobile/", update_data)
+        update_event = self.intervention.events.filter(event_type='note').last()
+        self.assertIsNotNone(update_event)
+        self.assertTrue('Note modifiée' in update_event.event_description or 'Note updated' in update_event.event_description)
+        self.assertEqual(update_event.field_changes.get('content', {}).get('old'), 'Note créée depuis mobile')
+        self.assertEqual(update_event.field_changes.get('content', {}).get('new'), 'Note mise à jour depuis mobile')
+
+        # 3. Upload photo depuis intervention_detail_mobile POST
+        photo_file = SimpleUploadedFile("test_mobile_photo.jpg", b"image_data", content_type="image/jpeg")
+        detail_url = reverse('interventions:intervention_detail_mobile', args=[self.intervention.id])
+        self.client.post(detail_url, {'photos': [photo_file]})
+        doc_event = self.intervention.events.filter(event_type='document').last()
+        self.assertIsNotNone(doc_event)
+        self.assertTrue('Document ajouté' in doc_event.event_description or 'Document added' in doc_event.event_description)
diff --git a/loko/interventions/views/mobile.py b/loko/interventions/views/mobile.py
index f670019..1a364d0 100644
--- a/loko/interventions/views/mobile.py
+++ b/loko/interventions/views/mobile.py
@@ -53,7 +53,7 @@ from dateutil.relativedelta import relativedelta
 from common.private_files.helpers import build_private_url
 from common.utils import get_short_name
 
-from interventions.services.timeline_service import record_document_event
+from interventions.services.timeline_service import record_document_event, record_note_event
 from interventions import views
 from interventions.models import (InterventionSubscription, Intervention, InterventionAsset, InterventionTimeLine, InterventionContractPost, InterventionDocument, InterventionNote, InterventionLocation,
                      InterventionLink,
@@ -491,12 +491,23 @@ def intervention_detail_mobile(request, intervention_id):
                 if note_id:
                     try:
                         note = InterventionNote.objects.get(pk=note_id, intervention=intervention)
-                        # Only allow updating if user is the author
-                        if note.note_author == request.user:
+                        user_cfg = getattr(request.user, 'config', None)
+                        if can_edit_note(request.user, user_cfg, note):
+                            old_note_type = note.note_type
+                            old_content = note.content
                             note.content = cleaned_data['content']
                             note.note_type = cleaned_data['note_type']
                             note.updated_by = request.user
                             note.save()
+                            record_note_event(
+                                intervention=intervention,
+                                user=request.user,
+                                action='update',
+                                note_type=note.note_type,
+                                content=note.content,
+                                old_note_type=old_note_type,
+                                old_content=old_content,
+                            )
                         else:
                             messages.error(request, _("Vous n'êtes pas autorisé à modifier cette note"))
                             note = None
@@ -506,23 +517,40 @@ def intervention_detail_mobile(request, intervention_id):
                 
                 # Create new note if no existing note was found/updated
                 if not note:
-                    InterventionNote.objects.create(
+                    new_note = InterventionNote.objects.create(
                         intervention=intervention,
                         content=cleaned_data['content'],
                         note_type=cleaned_data['note_type'],
                         note_author=request.user,
                         note_time=now()
                     )
+                    record_note_event(
+                        intervention=intervention,
+                        user=request.user,
+                        action='create',
+                        note_type=new_note.note_type,
+                        content=new_note.content,
+                    )
             else:
                 messages.error(request, _("Erreur lors de l'enregistrement de la note."))
 
         # 2. Upload de documents (photos)
+        uploaded_photos = []
         for file in request.FILES.getlist("photos"):
-            InterventionDocument.objects.create(
+            doc = InterventionDocument.objects.create(
                 intervention=intervention,
                 file=file,
                 uploaded_by=request.user
             )
+            filename = getattr(file, 'name', '') or getattr(doc, 'filename', None) or str(doc.id)
+            uploaded_photos.append(filename)
+        if uploaded_photos:
+            record_document_event(
+                intervention=intervention,
+                user=request.user,
+                action='upload',
+                filenames=uploaded_photos,
+            )
 
         # 3. Traitement des opérations
         for operation in intervention.operations.all():
@@ -783,13 +811,7 @@ def intervention_detail_mobile(request, intervention_id):
         .annotate(type_priority_order=note_priority_case)
         .order_by('type_priority_order', 'note_time')
     )
-    if is_admin:
-        editable_note_ids = set(notes.values_list('id', flat=True))
-    else:
-        editable_note_ids = set(
-            notes.filter(note_author=request.user, note_time__gte=one_hour_ago)
-            .values_list('id', flat=True)
-        )
+    editable_note_ids = {n.id for n in notes if can_edit_note(request.user, user_config, n)}
 
     
     documents_qs = intervention.documents.all()
@@ -1948,12 +1970,23 @@ def save_intervention_mobile_ajax(request, intervention_id):
             if note_id:
                 try:
                     note = InterventionNote.objects.get(pk=note_id, intervention=intervention)
-                    # Only allow updating if user is the author
-                    if note.note_author == request.user:
+                    user_cfg = getattr(request.user, 'config', None)
+                    if can_edit_note(request.user, user_cfg, note):
+                        old_note_type = note.note_type
+                        old_content = note.content
                         note.content = note_content
                         note.note_type = note_type or note.note_type
                         note.updated_by = request.user
                         note.save()
+                        record_note_event(
+                            intervention=intervention,
+                            user=request.user,
+                            action='update',
+                            note_type=note.note_type,
+                            content=note.content,
+                            old_note_type=old_note_type,
+                            old_content=old_content,
+                        )
                         result['note_saved'] = True
                         result['note_updated'] = True
                     else:
@@ -1971,6 +2004,13 @@ def save_intervention_mobile_ajax(request, intervention_id):
                     note_author=request.user,
                     note_time=now()
                 )
+                record_note_event(
+                    intervention=intervention,
+                    user=request.user,
+                    action='create',
+                    note_type=note.note_type,
+                    content=note.content,
+                )
                 result['note_saved'] = True
                 result['note_updated'] = False