A U.S. professor’s sudden phone ban caused student backlash over unannounced grade penalties.

Students at a U.S. university are pushing back after a professor enforced a phone ban without prior notice, leading to concerns about failing grades. The professor began deducting participation points for phone use during class, a rule not stated in the syllabus or announced early in the term. Several students said they were unaware of the policy until penalized, with one claiming they are now at risk of failing. The sudden enforcement has sparked debate over transparency and fairness in academic policies, with students demanding clearer communication. The situation remains unresolved as students seek to address the impact on their grades.