diff --git a/addons/sms/wizard/send_sms.py b/addons/sms/wizard/send_sms.py
index 1856b2f17dd..a637b43133b 100644
--- a/addons/sms/wizard/send_sms.py
+++ b/addons/sms/wizard/send_sms.py
@@ -9,6 +9,16 @@ from odoo.addons.iap.models import iap
 
 _logger = logging.getLogger(__name__)
 
+try:
+    import phonenumbers
+    _sms_phonenumbers_lib_imported = True
+
+except ImportError:
+    _sms_phonenumbers_lib_imported = False
+    _logger.warning(
+        "The `phonenumbers` Python module is not installed. Try: pip install phonenumbers."
+    )
+
 
 class SendSMS(models.TransientModel):
     _name = 'sms.send_sms'
@@ -16,6 +26,27 @@ class SendSMS(models.TransientModel):
     recipients = fields.Char('Recipients', required=True)
     message = fields.Text('Message', required=True)
 
+    def _phone_get_country(self, partner):
+        if 'country_id' in partner:
+            return partner.country_id
+        return self.env.user.company_id.country_id
+
+    def _sms_sanitization(self, partner, field_name):
+        number = partner[field_name]
+        if _sms_phonenumbers_lib_imported:
+            country = self._phone_get_country(partner)
+            country_code = country.code if country else None
+            try:
+                phone_nbr = phonenumbers.parse(number, region=country_code, keep_raw_input=True)
+            except phonenumbers.phonenumberutil.NumberParseException:
+                return number
+            if not phonenumbers.is_possible_number(phone_nbr) or not phonenumbers.is_valid_number(phone_nbr):
+                return number
+            phone_fmt = phonenumbers.PhoneNumberFormat.INTERNATIONAL
+            return phonenumbers.format_number(phone_nbr, phone_fmt).replace(' ', '')
+        else:
+            return number
+
     def _get_records(self, model):
         if self.env.context.get('active_domain'):
             records = model.search(self.env.context.get('active_domain'))
@@ -38,7 +69,8 @@ class SendSMS(models.TransientModel):
             phone_numbers = []
             no_phone_partners = []
             for partner in partners:
-                number = partner.mobile
+                default_field_name = 'mobile' if partner.mobile else 'phone'
+                number = self._sms_sanitization(partner, self.env.context('field_name') or default_field_name)
                 if number:
                     phone_numbers.append(number)
                 else: