The results, which come as millions of youngsters return to school this week, show 65 per cent of 8-11 year olds in the UK own a smartphone.
Carolyn Bunting, General Manager at Internet Matters, said the results showed it was more important than ever that parents understood what their children were viewing online.
"This adult-like behaviour in children makes parents feel more comfortable that their children are grown up enough to own a smartphone, but it’s a tough decision as parents need to balance this new found freedom with a level of supervision and boundary setting to ensure safe internet usage." The Internet Matters survey was carried out to mark the one-year anniversary of new changes to the National Curriculum that made e-safety a compulsory topic in primary schools.
It's backed up by a new ad campaign and online safety guide by Internet Matters, a not-for-profit organisation backed by the four leading internet service providers, BT, Sky, Talk Talk and Virgin Media.
Seaside town Brighton came bottom of the table with just four out of ten children aged 8-11 owning a smartphone.
And while parents believe responsibility for keeping children safe online rests with them - nine out of 10 would like to see schools carry more e-safety lessons.
"We would urge parents to ensure they have the conversation with their children about how to be responsible on their phones and ensure that the safety settings are in place across all their devices and search engines." The survey also revealed how Newcastle is the 'smartphone' capital of the UK - with 90.5% of children aged 8-11 owning a handset.
It is followed by Manchester, where 65 per cent of primary school children own a smartphone, Birmingham (61 per cent) and London (55 per cent).
A new poll by e-safety group Internet Matters has revealed 85 per cent of primary school parents want an age requirement."With such a huge amount of young people owning smartphones and the acceptable age of doing so being 10, parents need to be more aware than ever of what their children are doing online," she said."That's why we have launched our brand new online safety guide, so that parents remember these safety precautions in their back to school shopping list for their children.Child psychotherapist Catherine Knibbs said although aged 10 seemed young to own a mobile phone, it is the age when kids start wanting new independence.She said: "It is no surprise that 10 appears to be the most popular age parents feel comfortable letting their children own a smartphone as this is the age that children move from a more simplistic view of the world to being more independent, think in a more complex way, and show the ability to understand the consequences of their actions.
My BFF SMILF Morghan Richardson and I both had a bad reaction to a recent Huffington Post article discouraging single parents from rushing into introducing a potential mate to the kids.