What does it mean that there is a similar red flag and a no sign on the upper right of oppo mobile phone?

The position of the status bar of OPPO mobile phone cannot be adjusted. The position on the top of the mobile phone that displays information such as network, operator information, time and power is the status bar.

You can quickly pull down the status bar to bring up shortcut switches (control center), such as data network, Wi-Fi, mute, Bluetooth, flight mode, GPS, screen rotation and so on. When related functions are turned on, related function icons will be displayed in the status bar.

Tips:

There may be differences between different models, depending on the current version.