Reason: The mobile phone is to ensure that the network is smooth, the first choice of WIFI network connection, when the WIFI signal is not good or is turned off, and the data traffic is not turned off, it will automatically connect to the data traffic to ensure that the user can continue to surf the Internet.
2. Solution: If you are worried that traffic will slip away unconsciously, you may wish to turn off cellular data before using WIFI, so that even if the WIFI is disconnected, it will not automatically steal traffic. 3 Extension: After the IOS system locks the screen, the WIFI connection can only be maintained for a short period of time, and then it will be automatically disconnected, so when using the Apple device to download through WIFI, try to ensure that it does not automatically lock the screen. In addition, choose a stable signal, fast connection WIFI, is also the best guarantee for Changyou network!