More than half of parents believe mobile phones should be banned inside school, according to a survey.
Almost six in 10 parents (59%) said they think pupils should not be allowed to carry their mobiles around school.
But just under half (49%) believe children should be allowed to carry them to and from school.
"Our research finds that 72% of children in Year 7 have a smartphone and suddenly they’ll have the world at their fingertips," explained Carolyn Bunting, chief executive of Internet Matters – who authorised the survey as part of its Back To School campaign.
"Giving a child a smartphone can give parents peace of mind and it offers children fantastic opportunities to learn, communicate and explore.
"But if children aren’t prepared – they can face many digital challenges including managing friendship groups, pressure to have social media or even pressure to play certain games."
Of the 2022 parents surveyed, almost a quarter said phones should be permitted during break time, while 34% could accept them being used during lunch time.
The findings come as French students return to school with a new smartphone ban in place this September, meaning anyone aged between three and 15 will have to leave their devices at home or switch them off at school.
As new starters begin secondary school, the survey also showed majority of parents are concerned about the pressures of digital life on their children.
One in seven (71%) said they are worried about their child being pushed into sharing images or video, and 73% are anxious about their child’s ability to manage online relationships.
Cyberbullying is also a cause of concern for eight out of 10 parents, with 68% worried about their child feeling the strain of having the latest device.
Psychologist Dr Linda Papadopoulos said: "Children who are starting secondary school are going from being a big fish in a little pond to a little fish in a big pond and they are suddenly having to find their way."
"Unless parents take the time to outline the differences of communicating online and offline, and prepare them for how things can be misconstrued online – they run the risk of feeling isolated or even bullied."