One in 10 people have been injured as a result of tripping, falling, colliding with a solid object, or failing to notice a car while using a mobile phone, a study has found.
Dr Joanna Lumsden, from Aston University in Birmingham, said that in London, two teenage pedestrians a day were killed or injured because they were distracted by their phones.
"A&E departments have seen more and more admissions as a result of texting accidents," she told the British Science Festival in Birmingham.
Dr Lumsden described an experiment in which volunteers followed a path while texting, during which colour-coded warnings were flashed up. She found that people missed one in five potential hazards.