When i try to start WhatsApp Web on the phone, the QR-Code scanner screen does not even open, but i get a passive notification "check your internet connection on the phone". While i can chat with WhatsApp without any problems, so the internet connection and the connection to WhatsApp cannot be the real problem.
How can i get Whatsapp to recognize that the internet connection is fine and open the qr code scanner?
You don't have any network access now
which is different error then what you wrote in your Question. You may upgrade WhatsApp to latest version and try! – AADAndroidEnthusiasts Aug 24 '16 at 6:39