How to prohibit mobile phone from sending short messages?

Two methods of forbidding mobile phone to send short messages;

Method 1: Turn on the flight mode of the mobile phone. When the mobile phone is in flight mode, it is impossible to make calls and send and receive text messages. If there is not only a mobile phone, you can only use the following method 2.

Method 2: Go to the business hall and turn off the SMS function.

SMS protocols supported by mobile phones can be divided into SMS, EMS and MMS. Short message is the most commonly used, called short message service. It is the earliest short message service and the most popular short message service at present. Through it, mobile phones can send and receive short messages to each other, and the content is mainly text, numbers or binary non-text data. At present, the length of this short message is limited to 140 bytes.

Short message has been welcomed by many users because of its simple and convenient use function, and it has spread rapidly. However, it is always the first generation wireless data service, which is limited by technical standards in content and application.