You don't need a mobile card to surf the Internet. No sim card can still be turned on, but at this time the mobile phone is a typical pda, there is no phone function. Different models, different brands of mobile phones will have differences in the Internet, but in general, when the WIFI function of the mobile phone can receive the WIFI signal, you can not through the network of the communication company to surf the Internet, in order to save traffic charges; At home, users can convert wired signals into WIFI signals through a wireless router; In public places such as schools and KFC covered by wireless LAN, as long as you enter the password, the mobile phone can be connected to the wireless terminal, and there is no need for a SIM card; The SIM card only works when the phone is turned on, making calls, sending text messages and accessing the data network.
After completing the command, it will go to sleep.