How to apply for international long distance calls by sending a text message?

SMS activation guide. All postpaid users can activate the international long distance function by sending the SMS "KTGJCT" to 10001. After the activation is successful, the system will reply to the SMS to inform the user. If the activation fails, the system will reply a text message: "System processing failed, please try again later, or contact 10000" or "Business processing failed, please contact 10000 for details." If the user has originally activated the international long distance function, the text message reply will be: " Dear customer, your phone has the international long distance function. Cancel