L Unicom card sends SMS for three yuan, and Yuan Shao Unicom business hall in Jiyuan City, Henan Province for three yuan.

According to what you described, you may have used Unicom's letter service. Unicom's convincing fee consists of two parts: communication fee and information service fee. The communication fee is charged when you give an order, each item is 0. 1 yuan; The charging methods of information fee include article-based charging and monthly charging. The cost of each service is different. If 3 yuan is charged after sending a short message, the service fee will be charged according to the article.