Hey! I have the same problem. Did you managed to resolved?both in Wi FI 2G and 5G does not connect only turning off bluetooth back to normal but connects again it bugs again the internet network
even the 4G internet I think fails too
For 3 years long my POCO F3 phone worked perfectly (i'm a big fan of xiaomi devices and ecosystem). This week i receive the notification to update from MIUI OS to HYPEROS (1.0.1.0.TKHEUXM). I trust that is a valid version that was tested and validated. It seems not! My wifi stop working at all - it appears on but do not find any network around me (I live in the middle of a big European city)!! battery drains like i never see it before, phone overheats during charging, phone gets frozen suddenly in any app and then reboot it self. This makes this phone totally useless. It's a brick phone as of now.