How to SMS offline in wlan?

If the page is closed, please follow this step: the first step is to type CMD in the start menu, and the second step is to open CMD and enter ipconfig/release command, and then press enter. The system will automatically release the ip address, so you can log off. If you want to continue surfing the Internet, disable the wireless network and then enable it. It is best to log on again after logging off in this way to log off normally, so as not to generate extra expenses.