It's the wifi. The reason for the interruption is basically wifi interruption, it is the problem of the mobile phone, not the signal problem, the default person in the mobile phone is high. The receiver, and the router we generally use is 2.4g reception signal, so it will lead to poor signal.
There's another reason. It's a problem with the router. At this point, we can set it on the phone.
In the first case, it is often disconnected because of the poor network signal around it, or it may be because there is a problem with your mobile phone data card, or it may be because there is a problem with the identification network signal end of the Xiaomi 11 device.