1066 is used for the national short message service, also known as the fee deduction service. The main usage scenario is the uplink SMS of mobile phone users. After a mobile phone user uploads a short message to the short message number in this section, the operator will charge a short message fee of 1 cent, and may also be charged a certain communication information fee.

1065 and 1069 are mainly used for enterprises to send short messages to designated mobile phone numbers. Operators only charge short message fees to enterprises that send short messages, and mobile phone users receive short messages for free. At the same time, mobile phone users only charge 1 cent for sending text messages to these two numbers. 10655, 10657 and 10659 in paragraph 10655 are the short message channels of China Unicom, China Mobile and China Telecom respectively, and paragraph 1069 is the short message channel of triple play, so China Mobile, China Unicom and China Telecom.

106 SMS refers to the gateway SMS platform provided only by China Mobile, China Unicom and China Telecom, that is, the SMS you receive on your mobile phone that starts with 106 is called 106 SMS. 10655 Unicom, 10657 Mobile, 10659 Telecom, and the last two digits are the city code, that is, the city where the channel you use is located. There is also 1069, which is a triple play short message channel.