Why do I get a text message every time I call my friend?

Then your friend should have handled the business of hanging up SMS (going to the telephone version). On-hook SMS (off-hook version) refers to the fixed telephone, PHS, Tianyi mobile phone users open on-hook SMS (off-hook version) service, and after the system is set up, dial the target customer's phone. After the call, the system sends a short message to the target customer's mobile phone. The content of the short message is the content set by the merchant, including the merchant's new product recommendation, promotion information, coupons and so on. Assist merchants to better carry out active marketing activities. Every 67 words of this service is a short message, and the maximum number of words that users can set is 150 words, and it is charged by the article. The recipients of short messages can be China Telecom, China Mobile and China Unicom. This service is charged on a monthly basis, and the information content and cost vary according to different grades. If necessary, it can be handled through the account manager and business hall. For more service offers, click on "official website" Customer Service 2 17 below to answer your questions.