Very frequent Wifi disconnection while being in China I'm having an issue on my Nexus 4 (Stock Android 5.1.1).

It keeps disconnecting from my Wifi. When I go back to connect, it says "No Internet access, automatic connection impossible".

I currently live in China so my guess is that Android checks if internet is available by querying a Google server, which is blocked in China so it then concludes "No Google = No Internet" and disconnects me from my Wifi.

I can't find any way to disable that Auto-Disconnect "Feature".
I know this is an old thread, but I found the solution. Enable airplane mode, then enable wifi. It will show the internet connection is down, but wifi will still work. Then you can disable airplane mode and it will stay connected to the wifi (until you leave the coverage area, then you'll probably need to do it again when you return).