• Yondr makes the zippered pouches that people in school and at concerts use to store their phones. • School phone bans are becoming more popular, including in New York and Los Angeles. • Its CEO says he uses a flip phone — and thinks social media is "lame."

Graham Dugoni founded Yondr in 2014 with the idea of making phone-free experiences for concerts and comedy shows.

While the entertainment side of the business is buzzing, Yondr has become best known for its use in schools, where the magnetic pouches lock up students' phones for the day.

Yondr has scored big deals with school districts (the pouches reportedly cost around $30 per student). Dugoni says the company, which is based in Los Angeles and has around 150 full time employees, is profitable.

As more schools implement bell-t

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