In July, France's parliament approved legislation banning both social media access for children under 15 and mobile phone use in high schools.It is part of a push by President Emmanuel Macron for children to spend less time in front of screens, which the government fears is arresting their development.But earlier this month, the country's top court struck down the social media provision, dealing a blow to Macron.However the Constitutional Council did not rule on the separate provision banning mobile phone use in high schools.On Monday, government spokesperson Maud Bregeon said Macron "has decided to promulgate the law" containing the ban on phones, despite the Constitutional Council striking down its flagship provision."As a result, the ban on mobile phones in high schools can take effect from the start of the new school year, with a stable, consolidated and statutory legal framework," she said after a cabinet meeting. France's school year starts in September.France has already banned children from using mobile phones in colleges -- the schools attended between the ages of 11 and 15 -- and in primary schools. In early July, high schools had been instructed to prepare for the measure's implementation in September, ahead of its adoption by parliament later that month. In order to enforce the ban, schools must amend their internal regulations.- 'Not ready' - But many schools may struggle to implement the measure because they have had little time to prepare.