Free WiFi hotspots are currently being provided within the Düsseldorf city area by Wall AG, Unitymedia and Freifunk Düsseldorf.
200+ hotspots (map, OpenStreetMap), can be used without registration. No limit. Use of fastest available data connection at given location.
Wall AG, 50+ hotspots (map, Google Maps), one-time online registration required; after first connection with the Wall AG network on the page that then displays on your mobile browser. No limit. Use of fastest available data connection at given location.
20+ hotspots (map), one-time registration by SMS required; number for registration will be shown after first connection with the network on the page that then displays on your