The following five hazards are associated with playing with cell phones: 1. Myopia is caused by playing with cell phones, which can cause visual fatigue, especially damage to the optic nerve, because the eyes are too close to the electronic screen, so if you do not pay attention to eye hygiene, it will quickly lead to vision loss. 2. The electromagnetic waves generated by cell phones will stimulate brain cells, which will increase the risk of tumors. 3. The first thing you need to do is to take a look at the screen and see how it looks.