San Diego Unified adopted a new, more flexible ban on student cellphone use at school to replace a decades-old policy. But questions remain about how it will be enforced, and one trustee worries the new ban doesn’t go far enough.

The Unified School District board Tuesday approved a phone-free school day policy for the 2025-26 school year, with implementation beginning Aug. 11. The directive applies to all students in grades TK–12,