Economist.com – Cities Guide Singapore’s free Wi-Fi service, which since December 2006 has covered almost all public areas, has been extended to the place it was most notably lacking: the terminals at Changi Airport. Users of the airport, including those at the new Terminal 3 and Budget Terminal, can now log on to wireless@sg and access the internet free of charge. The download speed, 512 kilobits per second, is fast enough for most needs. Powered by ScribeFire.