By Bradley Jolly A mother whose teenage daughter was subjected to a brutal attack on a bus on the way home from school says under 16s should be banned from having smartphones. The deplorable assault on Kaylynn Donald was filmed by baying teens and the footage was plastered over social media. It left the 13-year-old girl feeling suicidal and now her mum Vicky, 36, is campaigning for change. A new poll reveals most parents believe the Government should outlaw the devices for youngsters following a spate of violent attacks on children which were filmed on phones. Vicky wants to see safer phones f…