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Xiaomi's mobile phone has a brand with an up-and-down arrow on it. What do you mean? How to cancel it?
The up and down arrow signs on Xiaomi's mobile phone indicate that the application is using data traffic. If you don't want an application to use data traffic, you can cancel permissions in application settings or turn off mobile data in mobile phone settings.

First of all, let's understand the meaning of the up and down arrow marks on Xiaomi's mobile phone. When we open an application on Xiaomi's mobile phone, if the application needs to be connected to the Internet, an up and down arrow will be displayed on the status bar. This flag indicates that the application is using mobile data or Wi-Fi network for data transmission. Mobile data is usually connected through the network provided by mobile phone operators, while Wi-Fi networks are connected through wireless routers.

If we don't want the application to use data traffic, we can cancel this permission in the application settings. The specific operation method is: enter the "Settings" interface, select the "Application Management" option, find the application whose permission is to be cancelled, enter the application details page, and then cancel the "Use Mobile Data" or "Use Wi-Fi" permission. In this way, applications can no longer use data traffic for data transmission.

In addition, if we want to turn off mobile data completely to avoid any application using data traffic, we can turn off the mobile data switch in the mobile phone settings. The specific operation method is: enter the "Settings" interface, select the "Mobile Network" option, and then turn off the "Mobile Data" switch. In this way, all applications can no longer use mobile data for data transmission.

It should be noted that after turning off the mobile data switch, the mobile phone will not be able to connect to the Internet, so it will not be able to receive or send any network data. So we should choose whether to turn off the mobile data switch according to the actual situation.