I noticed that in miui 14 my Mi 11 ultra does not switch automaticly from 3G network to 4G, you have to go to settings, or put it in airplane mode, or restart the phone. Also beeing now in another country , it says 4G, internet icon is there, but no data suddenly. I have to restart the phone, erase APN, put on airplane mode and after lots of tries data works again. Thank you!
