Relevant studies have shown that mobile phones are more harmful than computers. Because of the small screen of it, people are more focused when playing mobile phones, so it hurts the eyes even more. When using computers, people's limbs can move, but people who addicted to playing with mobile phones often have little activity, which is more detrimental to their physical and mental health.
The statement 'The background light of the computer is more likely to cause the user's vision loss and headaches than the mobile phone' weakens the above view most.