connectifiy

I need to reboot my phone once a while to get WiFi connection back. The phone has been factory reset and all updates has been made Anyone else has this issue? And I have noticed that the phone is bit slow after new miui 11 update.

Hi there, Now, I have the weirdest story of all. I have a MI4S and yesterday I received a notification "SIM Changed". Since then I can't use 3G anymore nor can I call someone when I select "Preferr 3G" in the connectivity settings. I also can't send text messages nor receive them. Note: I was...