How does Unicom turn off and turn on the Internet function by sending short messages?

If the number is not opened, you can bring the valid identity certificate of the owner to the local business hall or call the local 100 10 to open it manually. As long as the mobile phone supports the internet access function, it can be used by setting the parameters of the mobile phone internet access. Please refer to the mobile phone manual or contact the manual assistant to set the parameters.