SMS local Country code, SMS Setup

Telephone Country code when entering receiving phone number. Bulk sms company can send sms to mobile phones in 180 different countries. The user at the Pos needs to enter the country code prior to the phone number to successfully send the sms. To make the cashier task easier, this code is already applied for local phone numbers. But needs to be replaced for foreign numbers. (This applies at the Pos when Cashier is entering the recipients number)