diff --git a/addons/project_sms/models/project_project.py b/addons/project_sms/models/project_project.py
index b5ca63698a2..27e21368b75 100644
--- a/addons/project_sms/models/project_project.py
+++ b/addons/project_sms/models/project_project.py
@@ -10,7 +10,11 @@ class ProjectProject(models.Model):
     def _send_sms(self):
         for project in self:
             if project.partner_id and project.stage_id and project.stage_id.sms_template_id:
-                project._message_sms_with_template(template=project.stage_id.sms_template_id, partner_ids=project.partner_id.ids)
+                project._message_sms_with_template(
+                    template=project.stage_id.sms_template_id,
+                    partner_ids=project.partner_id.ids,
+                    sms_numbers=project.partner_id.mapped('mobile'),
+                )
 
     @api.model_create_multi
     def create(self, vals_list):
diff --git a/addons/project_sms/models/project_task.py b/addons/project_sms/models/project_task.py
index 32461038f67..d65bc4d9614 100644
--- a/addons/project_sms/models/project_task.py
+++ b/addons/project_sms/models/project_task.py
@@ -10,7 +10,11 @@ class ProjectTask(models.Model):
     def _send_sms(self):
         for task in self:
             if task.partner_id and task.stage_id and task.stage_id.sms_template_id:
-                task._message_sms_with_template(template=task.stage_id.sms_template_id, partner_ids=task.partner_id.ids)
+                task._message_sms_with_template(
+                    template=task.stage_id.sms_template_id,
+                    partner_ids=task.partner_id.ids,
+                    sms_numbers=task.partner_id.mapped('mobile'),
+                )
 
     @api.model_create_multi
     def create(self, vals_list):
diff --git a/addons/project_sms/tests/test_project_sharing.py b/addons/project_sms/tests/test_project_sharing.py
index 717eb04524d..45d456e937b 100644
--- a/addons/project_sms/tests/test_project_sharing.py
+++ b/addons/project_sms/tests/test_project_sharing.py
@@ -3,29 +3,52 @@
 
 from odoo import Command
 from odoo.addons.project.tests.test_project_sharing import TestProjectSharingCommon
+from odoo.addons.sms.tests.common import SMSCommon
 
 
-class TestProjectSharingWithSms(TestProjectSharingCommon):
+class TestProjectSharingWithSms(TestProjectSharingCommon, SMSCommon):
     @classmethod
     def setUpClass(cls):
         super().setUpClass()
+        project_settings = cls.env["res.config.settings"].create({'group_project_stages': True})
+        project_settings.execute()
 
         cls.sms_template = cls.env['sms.template'].sudo().create({
             'body': '{{ object.name }}',
             'model_id': cls.env['ir.model'].sudo().search([('model', '=', 'project.task')]).id,
         })
-        cls.project_portal.type_ids[-1].write({'sms_template_id': cls.sms_template.id})
+        cls.task_stage_with_sms = cls.project_portal.type_ids[-1]
+        cls.task_stage_with_sms.write({'sms_template_id': cls.sms_template.id})
+
+        cls.sms_template_2 = cls.env['sms.template'].sudo().create({
+            'body': '{{ object.name }}',
+            'model_id': cls.env['ir.model'].sudo().search([('model', '=', 'project.project')]).id,
+        })
+        cls.project_stage_with_sms = cls.project_portal.stage_id.browse(2)
+        cls.project_stage_with_sms.write({'sms_template_id': cls.sms_template_2.id})
+
         cls.project_portal.write({
             'collaborator_ids': [
                 Command.create({'partner_id': cls.user_portal.partner_id.id}),
             ],
         })
+        cls.project_portal.partner_id.mobile = cls.random_numbers[0]
 
     def test_portal_user_can_change_stage_with_sms_template(self):
         """ Test user portal can change the stage of a task to a stage with a sms template
 
             The sms template should be sent and the stage should be changed on the task.
         """
-        stage = self.project_portal.type_ids[-1]
-        self.task_portal.with_user(self.user_portal).write({'stage_id': stage.id})
-        self.assertEqual(self.task_portal.stage_id, stage)
+        with self.mockSMSGateway():
+            self.task_portal.with_user(self.user_portal).write({
+                'stage_id': self.task_stage_with_sms.id,
+            })
+        self.assertEqual(self.task_portal.stage_id, self.task_stage_with_sms)
+        self.assertSMSIapSent([self.task_portal.partner_id.mobile])
+
+        with self.mockSMSGateway():
+            self.project_portal.write({
+                'stage_id': self.project_stage_with_sms.id,
+            })
+        self.assertEqual(self.project_portal.stage_id, self.project_stage_with_sms)
+        self.assertSMSIapSent([self.project_portal.partner_id.mobile])