Britons now spend more time using smartphones and tablets, watching television and listening to the radio than they do sleeping, thanks to the availability of broadband in the home and on the move, regulator Ofcom said on Thursday. Smartphones, which are now used by 61 percent of people, and tablet computers were behind the rise, Ofcom said, as they allow people to stay connected while on the move. Many people made telephone calls and surf the web at the same time as they watch television or listen to the radio, so the total volume of 11 hours 7 minutes is squeezed into 8 hours 41 minutes, or 20 minutes longer than they sleep, Ofcom said. Ofcoms research also showed that the most tech-savvy people are teenagers.