The only phrase you ever need to know.

English: Do you have internet connection?
French: Avez-vous une connexion Internet?
Spanish: ¿Tiene conexión a Internet?
Irish: An bhfuil tú nasc Idirlín?
Dutch: Heb je internet verbinding?
Danish: Har du internetforbindelse?
Italian: Ha una connessione internet?
Finnish: Onko sinulla internet-yhteys?
Swedish: Du har inte internet-anslutning?
Romanian: Nu aveți conexiune la internet?
Hungarian: Van internet kapcsolat?
Hungarian2: Van wifi?
Azerbaijani: Siz internet yoxdur?
Polish: Masz Internet?
Czech: Máš tady připojení k internetu?
German: Haben Sie Internetanschluss?
Croatian: Imaš internet?
Filipino: May internet po ba? Anung password?
Portuguese: Você tem conexão de internet?
Hebrew: יש לך חיבור לאינטרנט?
Chinese: Nǐ yǒu shàngwǎng ma?
Turkish: İnternet bağlantınız var mı?
Estonian: Kas sul on wifit ?
Icelandic: Ertu með internet tengingu?