Owning a smartphone may not be as smart as you think.
They may let you surf the internet, listen to music and snap photos wherever you are, but they also turn you into a workaholic, it seems.
A study suggests that, by giving you access to e-mails at all times, the all-singing, all-dancing mobile phone adds as much as two hours to your working day.
Researchers found that Britons work an additional 460 hours a year on average as they are able to respond to e-mails on their mobiles.
The study by technology retailer Pixmania reveals the average UK working day is between 9 and 10 hours, but a further two hours is spent responding to or sending work e-mails or making work calls.
More than 90 percent of office workers have an e-mail-enabled phone, with a third accessing them more than 20 times a day.
Almost one in 10 admits spending up to three hours outside their normal working day checking work e-mails, and even those without a smartphone check e-mails on their home computer.
Some workers confess they are on call almost 24 hours a day, with nine out of 10 saying they take work e-mails and calls outside their normal working hours.