Abstract: A device control system is disclosed. The system includes a first mobile terminal and a second mobile terminal. After enabling a wireless hotspot function, the first mobile terminal establishes a wireless fidelity (Wi-Fi) connection to the second mobile terminal, and transmits data to the second mobile terminal in a MIMO Wi-Fi antenna working mode. The first mobile terminal may monitor a remaining battery level and/or a device temperature of the mobile terminal. When the remaining battery level is less than a first battery level threshold and/or the device temperature is greater than a first temperature threshold, the first mobile terminal switches the Wi-Fi antenna working mode as SISO, limits a maximum forwarding rate of a TCP packet or a UDP packet to a first rate, and/or no longer responds to a probe request. In this way, power consumption of the first mobile terminal is reduced.

Abstract: A device control system is disclosed. The system includes a first mobile terminal and a second mobile terminal. After enabling a wireless hotspot function, the first mobile terminal establishes a wireless fidelity (Wi-Fi) connection to the second mobile terminal, and transmits data to the second mobile terminal in a MIMO Wi-Fi antenna working mode. The first mobile terminal may monitor a remaining battery level and/or a device temperature of the mobile terminal. When the remaining battery level is less than a first battery level threshold and/or the device temperature is greater than a first temperature threshold, the first mobile terminal switches the Wi-Fi antenna working mode as SISO, limits a maximum forwarding rate of a TCP packet or a UDP packet to a first rate, and/or no longer responds to a probe request. In this way, power consumption of the first mobile terminal is reduced.

Abstract: A method for restoring internet access by a local area network device includes obtaining, by a local area network device, a whitelist stored in the local area network device, and accessing, by the local area network device based on offer information that includes a private network address provided by a router and that is in the whitelist, the internet by using the private network address provided by the router.

Abstract: A service set identifier processing method and apparatus, and a terminal are provided, so as to resolve a problem that there are garbled characters when a terminal displays an SSID. The method includes: obtaining, by a terminal, an SSID in a first encoding format, where the SSID in the first encoding format is broadcast by a wireless AP; and converting, by the terminal, the SSID in the first encoding format to an SSID in a second encoding format, and displaying the SSID in the second encoding format, where the second encoding format is an encoding format used by an operating system of the terminal, and the first encoding format is an encoding format different from the second encoding format.