I used this code to remove spaces on the phone in clients

 But I want to modify the customer numbers that already exist. The code is only applied to the customers that we enter recently after add code

class ResPartner(models.Model): 

   _inherit = 'res.partner'
    @api.onchange("phone") 

   def remove_spaces_from_phone_number(self):   

    for record in self:       

     if record.phone:      

          record.phone = record.phone.replace(" ", "")

    @api.onchange("mobile")  

     def remove_spaces_from_mobile_number(self):  

      for record in self:       

            if record.mobile:        

               record.mobile = record.mobile.replace(" ", "")
  
    @api.model   

    def _name_search(self, name, args=None, operator='ilike', limit=100, name_get_uid=None):           args = args or []    

      domain = []     

      if name:       

      domain = ['|', '|', ('name', operator, name), ('mobile', operator, name), ('phone', operator, name)]
        return self._search(domain + args, limit=limit, access_rights_uid=name_get_uid)