Does Wi-Fi 's "provincial data mode" make sense?-Why does iPhone, which can't be heard so far?

IOS 13 provides a new "provincial data mode" to reduce data traffic for iPhone. Automatic data communication (in the background of the system) is suppressed by playing videos and downloading applications, thus saving data communication costs.

The significance of the existence of the provincial data mode is to save communication costs by excluding unnecessary and unnecessary data communications, especially mobile data communications (communications as the payment object of communication operators) from the automatic processing object. but the object is not just mobile data communication. Even if Wi-Fi also has a provincial data mode, it is not just to save communication costs.

One situation is that you want to reduce the amount of data transmission. Where there are difficulties in Wi-Fi airwaves, the communication speed is slow, and it will take such a long time if the data transmission volume is large. In provincial data mode, if the amount of transmission can be reduced, it can more or less resist the delay / bandwidth reduction of Wi-Fi. Music apps optimize music (Apple Music) streaming for low-bandwidth FaceTime video chats, thereby reducing frequent stops of music and video.

The other is when the storage capacity of iPhone is insufficient. When provincial data mode is enabled, the photo application is no longer synchronized with iCloud and stops automatically downloading music applications, reducing storage space.

To use the provincial data mode when connecting to the Wi-Fi, open the screen in the order of "Settings"Wi-Fi", click the "I" button on the target Wi-Fi access point, and turn on the "provincial data mode" switch on the screen that appears.