Hong Kong education authorities have contacted a school after its newly tightened rules and penalties on mobile phone use triggered an outcry among students. Under the new measures, due to take effect in the coming weeks, Form Three and Four students at the boys’ school Kwun Tong Maryknoll College will be banned from using mobile phones on campus, with devices stored in lockers and accessible only during designated time slots. The rules also stipulate that no other items may be kept in the...