Can Unicom really send text messages to remind users of violations?

No, the traffic police department will use the system number to send the corresponding violation and illegal information notice, and will not send it through the private number. It is said that China Unicom can send you a short message in order to make you pay for some services, which may be fraud. When handling business, you can call the official customer service hotline of China Unicom or go to the business hall of China Unicom.