If you have a Vodafone subscription (Internet + Landline + Mobile) or Ono Fibre subscription, your credentials are your Vodafone mobile phone number & password.
To get free access to the Vodafone WiFi Fon network, first you need to register your mobile phone here.
If you are a Ono Fibre subscriber, you will have to contact Vodafone Customer care in order to activate the service.
Should you have forgotten your password, you can reset it for Vodafone Spain users clicking here.
Connecting abroad (outside Spain)
To connect outside Spain, add the prefix VF_ES/ before your username to create your roaming username, e.g. VF_ESemail@example.com. Start a session with your roaming username and your normal password.
More details about how to connect: