diff --git a/addons/crm/models/crm_lead.py b/addons/crm/models/crm_lead.py
index 68a99774da8..54848433f96 100644
--- a/addons/crm/models/crm_lead.py
+++ b/addons/crm/models/crm_lead.py
@@ -2040,10 +2040,6 @@ class Lead(models.Model):
                     break
         return result
 
-    def _phone_get_number_fields(self):
-        """ Use mobile or phone fields to compute sanitized phone number """
-        return ['mobile', 'phone']
-
     @api.model
     def get_import_templates(self):
         return [{
diff --git a/addons/mass_mailing_sms/models/mailing_contact.py b/addons/mass_mailing_sms/models/mailing_contact.py
index 4f27b8be792..cee28bcf8a9 100644
--- a/addons/mass_mailing_sms/models/mailing_contact.py
+++ b/addons/mass_mailing_sms/models/mailing_contact.py
@@ -9,6 +9,3 @@ class MailingContact(models.Model):
     _inherit = ['mailing.contact', 'mail.thread.phone']
 
     mobile = fields.Char(string='Mobile')
-
-    def _phone_get_number_fields(self):
-        return ['mobile']
diff --git a/addons/phone_validation/models/models.py b/addons/phone_validation/models/models.py
index 52d60c5627a..68422b96496 100644
--- a/addons/phone_validation/models/models.py
+++ b/addons/phone_validation/models/models.py
@@ -15,7 +15,9 @@ class BaseModel(models.AbstractModel):
     def _phone_get_number_fields(self):
         """ This method returns the fields to use to find the number to use to
         send an SMS on a record. """
-        return []
+        return [
+            number_fname for number_fname in ('mobile', 'phone') if number_fname in self
+        ]
 
     @api.model
     def _phone_get_country_field(self):
diff --git a/addons/phone_validation/models/res_partner.py b/addons/phone_validation/models/res_partner.py
index 7a3b92c5314..c93b466da61 100644
--- a/addons/phone_validation/models/res_partner.py
+++ b/addons/phone_validation/models/res_partner.py
@@ -37,8 +37,3 @@ class Partner(models.Model):
         country_fname = 'country_id'
         number = self[number_fname]
         return phone_validation.phone_sanitize_numbers_w_record([number], self, record_country_fname=country_fname, force_format=force_format)[number]['sanitized']
-
-    def _phone_get_number_fields(self):
-        """ Stand alone version, allowing to use it on partner model without
-        having any dependency on sms module. To cleanup in master (15.3 +)."""
-        return ['mobile', 'phone']
diff --git a/addons/sms/models/res_partner.py b/addons/sms/models/res_partner.py
index 3215fa66832..74769276e5f 100644
--- a/addons/sms/models/res_partner.py
+++ b/addons/sms/models/res_partner.py
@@ -13,8 +13,3 @@ class ResPartner(models.Model):
             SMS recipients on partners are the partners themselves.
         """
         return self
-
-    def _phone_get_number_fields(self):
-        """ This method returns the fields to use to find the number to use to
-        send an SMS on a record. """
-        return ['mobile', 'phone']
diff --git a/addons/stock_sms/models/stock_picking.py b/addons/stock_sms/models/stock_picking.py
index dee5245f270..f7afe2448a2 100644
--- a/addons/stock_sms/models/stock_picking.py
+++ b/addons/stock_sms/models/stock_picking.py
@@ -45,11 +45,6 @@ class Picking(models.Model):
             'context': self.env.context,
         }
 
-    def _sms_get_number_fields(self):
-        """ No phone or mobile field is available on ``stock.picking`` model. Instead SMS will
-        fallback on partner-based computation using ``_sms_get_partner_fields``. """
-        return []
-
     def _sms_get_partner_fields(self):
         return ['partner_id']
 
diff --git a/addons/test_mail_full/models/test_mail_models_mail.py b/addons/test_mail_full/models/test_mail_models_mail.py
index 7deea6c1d87..ea3e3bf8e5c 100644
--- a/addons/test_mail_full/models/test_mail_models_mail.py
+++ b/addons/test_mail_full/models/test_mail_models_mail.py
@@ -90,6 +90,9 @@ class MailTestRating(models.Model):
     def _mail_get_partner_fields(self):
         return ['customer_id']
 
+    def _phone_get_number_fields(self):
+        return ['phone_nbr', 'mobile_nbr']
+
     def _rating_apply_get_default_subtype_id(self):
         return self.env['ir.model.data']._xmlid_to_res_id("test_mail_full.mt_mail_test_rating_rating_done")