Schoolmasters, how can Unicom mobile phones set up SMS reminders when traffic is insufficient?

you can try to send ATTX (case-insensitive) or 174 to 11, and activate the daily reminder of mobile Internet traffic. If the processing fails, it is not excluded that your mobile phone is in an abnormal service state such as arrears or downtime, and it can only be processed if the mobile phone is in a normal state. For details, please consult Unicom customer service.