Hi there!
Each of the PIxels 6 (GrapheneOS), 6a (GrapheneOS) and 7 (Vanilla Android) in my house, after receiving the Android 16 update, began to be unable to connect to my home WiFi. It took me some time, but I figured out that I had to change my Wireless access point's settings to a less secure configuration in order for Android 16 to be able to connect.
My wireless networks use WPA2-PSK (it is not capable of better) and can have "Protected Management Frames" set to "disabled", "capable" or "required".
My understanding is that Protected Management Frames are very important for WiFi security, in order to avoid forced de-auth and subsequent attacks. I have set them to "Required" for the past 5 years, and everything has been fine with our various phones until the Android 16 update.
With Android 16, it doesn't work any longer, and I have to downgrade the setting to "capable" if I want my phones to be able to connect. Apparently, Android 16 is not able to handle Protected Management Frames. This weakens the security for the whole WiFi network and the other devices (laptops, printers...).
Could GrapheneOS possibly compensate that Android 16 flaw by somehow putting back on the ability to use Protected Management Frames?
Thanks for your attention