United Kingdom, Feb. 6 -- Banning phones in schools has not resulted in higher grades or improved mental health, a study has found.

The world's first study of its kind - which was carried out at the University of Birmingham and published by the Lancet's journal for European health policy - has explored impact phone rules in schools have on pupil's health and education, with academics exploring students' behaviour, exercise, sleep pattern and length of time on their devices.

The research found no difference between those at schools with or without bans, with 1,227 students studied across 30 different secondary schools, which in turn were selected from a 1,341 sample of mainstream state schools across England.

Dr. Victoria Goodyear, the ...