More than a quarter (28 percent) of 12 to 15-year-olds say they would miss their mobile phone more than TV, says Ofcom.

According to the regulator's Children and parents: media use and attitudes report, 25 percent also say they'd miss the internet more than TV, despite the fact kids are watching more TV than ever at 17 hours per week, that's a two-hour increase on figures from 2007.

More than nine in ten (95 percent) of 12 to 15-year-olds have access to the web at home, compared to just 77 percent in 2007. Furthermore, 31 percent of children aged five to 15 who use the internet at home are watching TV via an online catch-up service on their PC or laptop, such as the BBC iPlayer or ITV Player.

Ofcom said the number of kids with social networking profiles had remained the same since last year, with three percent of five to seven-year-olds and 28 percent of seven to 11-year-olds and three quarters of 12 to 15-year-olds having a profile on social networking sites.

Visits to social networks from mobile phones has also surged with half of 12 to 15-year-olds using their handset to access a social network every week compared to a third in 2010.

Nearly nine in ten eight to 15-year-olds claim they know how to stay safe online. However, despite this, 20 percent of 12 to 15-year-olds say they've had a negative mobile or online experience in the past year, with 13 percent saying it involved gossip being spread about them. Nearly a quarter (23 percent) also said they know of someone that's been bullied via their mobile phone.

More than a quarter (28 percent) of 12 to 15s and 17 percent of 8 to 11-year-olds have social networking profiles that are viewable by all web users or friends of friends.

However, over half (54 percent) of parents of 5 to 15s supervise their child in some way when they're online, an increase from 48 percent in 2010. Nearly two in five (39 percent) of parents say they use parental controls or filtering software to protect their child online. Furthermore, 31 percent of parents whose child has a mobile phone that can access the net have limited their access to exclude websites aimed at those aged 18 or over.

Children are also becoming more aware of potential online risks, with just 12 percent of 8 to 11 year olds with a social networking profile saying they talk to people they don't know, down from 22 percent in 2010.

"The almost universal use of the internet at home by 12 to 15s – both for their education as well as their entertainment – is a positive step forward," said Ed Richards, Ofcom's chief executive

"The research also shows that parents and children are increasingly aware of how to be safe when using the internet. But risks do remain. Better understanding – amongst parents as well as their children – is key to helping people to manage content and communications, enabling them to enjoy the benefits of media use while protecting themselves from the potential risks."