ALEXANDRIA, United States (AFP) — At a red-brick school in Virginia, Hayden Jones is one of 1,000 students banned from using their phones as part of a trial hoping to boost learning.

But the 12-year-old’s verdict on the restrictions — a shrug of his shoulders — reflects the skepticism shared by some students and parents.

The phone ban at Twain Middle School is among a wave of measures implemented around the United States, and is part of a global movement replicated in Brazil, France and beyond.

Supporters believe restrictions will guard pupils from the apparent harms of smartphone use while at school, but opponents say the measures fail to prepare teenagers for the digital world they will inevitably enter.

Since September, Jones must now place his Android phone in a magnetic pouch each morning, which is locked until the end of the school day as part of a pilot scheme this academic year.

Jones, speaking to Agence France-Presse in a corridor lined with classrooms, said he hopes the ban will be gone by the time he starts eighth grade in September.

“I like being able to go to my locker and call my parents. That’s a big concern for me,” he said, adding that some pupils have found ways to still use their devices — including by bringing a “dummy phone” to put in the pouch.

School principal Matthew Mough admitted that enforcing the ban — and winning over students — has proved challenging, though he said most follow the rules.