Vietnam is one of countries with the percentage of people using mobile phones in the world dongthuoc high top. The advantages that a cell phone is brought tremendous results. It not only helps us in touch with others but also a useful means of entertainment. Not to mention the smart phone market is increasingly dominated with great features can be exploited as learning English, internet access, newspaper reading, physical examination, ... Also not surprising age Cell phone use is also very diverse. If older people use phones to communicate primarily with children and acquaintances, most young people to use mobile phones as a means of entertainment for access to the site social networking, photography, sound recording or video recording, ... However, the problem cell phone use in adolescents ages should be socially recognized seriously and responsibly. Smartphones threaten children's development by keeping children involved in many activities and features on the phone. It gradually becomes an addictive action and make them feel uncomfortable own phone no. 6. Smartphone is the cause of obesity Spend too much time on the phone not only affect morale but also to the child's physical. When holding the phone in hand, they will tend to hunker down for hours and this is the reason for the increasing evidence phi.hoc bad fat, lazy
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