That was a problem that plagued my old P30 pro. Miraculously that was no longer an issue once I switched phones. Joining the network may be tied to your simcard or phone (likely phone). You can try calling your telco for assistance, but M1 never really was much help in my case.How do I stop the iPhone from auto joining the wireless@SGx?
Disabling the auto-join toggle at the wifi menu doesn’t seem to work..