WhatsApp Web doesn't work on the phone

Question

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?


— allo | Sources

Answer

It works after a Backup & Reset:




  • Make a new local backup (via settings -> chats -> chat-backup)

  • uninstall WhatsApp

  • install WhatsApp

  • Login via Phone number and sms verification (even when there's a backup)

  • Whatsapp finds the local backup and asks if you want to import it. Nothing is lost, but a few settings. Profile image is restored, but for the screen name whatsapp asks you again (and suggests the name from your google account)



So if someone has the same problem: backup & restore works fine.
Of course it doesn't hurt to have a TitaniumBackup, adb backup or similiar as well.


— allo | Sources

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