Argentina has a geographical mobile number plan based on the subscribers preferred area. (format: 00 - 54 - areacode - prefix - subscribernumber):
Calling from inside the country to an AR mobile number requires prefix 15.
Calling from outside the country to an AR mobile number requires prefix 9.
Texting from outside the country to an AR mobile number requires no prefix.
Replies to messages from AR can always be sent to the number in the display regardless of any existing prefix.
Alphanumeric senders are not allowed.
Delivery using a random Numeric sender is possible.
Shortcode senders are allowed.
There are restrictions for Adult content.
There are restrictions for Gambling content.
There are restrictions for General abuse (spam, phishing, etc).
Argentinian operators don't return Handset DLR.
Argentinian operators support Concatenated SMS.
Argentinian operators support Unicode.
CM has can deliver messages with a fixed shared shortcode or dynamic numeric sender.
CM can enable 2-way sms in Argentina on a shared shortcode when a keyword and service description is provided.