A 17-year-old girl who says she has been exposed to harrowing content such as beheading videos, footage of a young child shooting another and porn has joined a legal action against the government .

Flossie McShea, 17, is among those adding their support to two fathers’ claim for a judicial review , which seeks to have smartphones completely banned in schools . She said she has joined as a claimant because she feels the Department for Education (DfE) has failed to protect her and other children from harms inflicted by phones during the school day.

Will Orr-Ewing and Pete Montgomery, both parents of school-age children, wrote to education secretary Bridget Phillipson in July to say they intended to challenge a mandatory school phone ban not being included in safeguarding guid

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