Connect your device to one of the wifi networks on the ICE or Intercity train: "WIFIonICE" or "WIFI@DB".
On most devices, a login page will then open automatically. On this page, click to accept the General Terms and Conditions (GTC) and confirm by clicking on "Browse now for free". If you are not automatically directed to the login page, please enter "Login.WIFIonICE.de" or "WIFI.bahn.de" in your browser.
Once connected, you can open the ICE Portal by clicking on "Continue" on the browser page or by entering "ICEportal.de" in your browser.