How to find out the content of short messages?

Through the operator survey. Because when sending and receiving short messages or answering calls, they are all operated by the mobile phone card handled by the operator, and all the operations operated by the operator and personal mobile phone card, such as call records and short message records. , only I can inquire and handle with my ID card, and no one else can inquire. When the police investigate a case, they can also inquire directly through the business hall.