Not only will you be able to surf the internet on your laptop or tablet like normal, but any GSM-compatible smartphones can send SMS messages. All this comes with a price, of course. Here's the current rates:
Promotional prices from 6 September 2012 to 30 November 2012*
USD $25 for 30 megabytes – Suitable for medium to long-haul flights; or laptop users
USD $10 for 10 megabytes – Suitable for short-haul flights; or mobile users
*Price plans are currently only valid on the flight sector that they are purchased on. For example, a price plan purchased on SQ12 from Singapore to Narita cannot be continued on the next sector, from Narita to Los Angeles.
The service comes from OnAir, which utilizes satellites to send the internet down to you, sitting there in seat 35C.
Flying Singapore soon? Check your itinerary to see what type of aircraft you'll be flying as a first clue as to whether or not you'll have in-flight WiFi. When onboard, the cabin crew will make an announcement if it is available and, to double check, a map highlighting availability when flying over specific countries is published in the KrisWorld in-flight entertainment magazine.
Wade through all the details right here and we'll see you at 38,000'!