Why can't the mobile phone receive SMS reminders? (parent user)

1, attendance SMS can be divided into abnormal SMS and normal SMS. Schools generally use abnormal attendance messages, that is, students will send messages to their parents only when they are late for school and leave early, and students will not send messages when they enter and leave school normally. 2. Check whether the mobile phone number bound by the customer is wrong. There may be an error in binding the fixed telephone or disabling the mobile phone number. 3. Does the student bring a card to school and whether the student ID card is lost? 4. Other reasons can be answered by the manufacturer. Thank you for your interest in telecom products. I wish you a happy life. If the above information can't solve your problem, you can also log in to Guangdong Telecom Mobile Mall () to seek help from online customer service, which is available 7X24 hours a day!