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A mother has started a campaign to highlight the danger of phones for young people as pupils get ready to take exams.
Miranda Wilson, from Bath, set up Teched Off to raise awareness of the dangers of social media and smartphones for young people.
As students up and down the country are taking their GCSEs and A-levels, there are concerns about how excessive screen time is affecting how they learn.
Ms Wilson said: "What I would like is really simple; one is legislation to stop under-16s being on smartphones and social media and two is a public health campaign so parents are educated about the harms."