Up to 750,000 jobs could be created in the next five years to fuel Britain's "burgeoning" digital economy, a report has predicted.
Mobile phone giant O2 said the continued growth of the digital sector offers "fantastic opportunities for tech-savvy young people", but warned not enough was being done to harness their skills.
Ronan Dunne, chief executive of the company's parent firm Telefonica, told Sky News: "If we don't generate those jobs using British youngsters with the right skills, businesses will have to look overseas.
"With the situation in the UK, where one million young people are out of work, we have to make sure we get the schooling elements right, the employer elements right and the readiness for work right."
Research by O2 suggests that 20% of the 750,000 possible vacancies would be entry-level jobs, suitable for people entering the world of work for the first time.
Many roles would be linked to the nationwide roll-out of 4G technology, which offers faster mobile internet speeds.
However, Mr Dunne said employers must show a greater willingness to recruit school leavers in order for the digital jobs boom to have a noticeable impact on youth unemployment.
"The onus cannot be on the Government alone," he said.
"Businesses must proactively seek out opportunities to collaborate to maximise the digital growth opportunity and harness the potential of the next generation.
"As digital natives, young people possess valuable skills that will be the future fuel of our economy, but not enough is being done to harness them."
Mr Dunne's comments came at the opening of Campus Party Europe, one of the world's biggest technology festivals.
Up to 60,000 young people are expected to attend the week-long event at The O2 in London.
As well as 100 guest speakers, the event features a digital skills marketplace, where school leavers can meet potential employers, and a hackathon, which aims to teach young people basic coding skills.
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