In our life, developing very fast in technology. Phone is one of electronic technology which is quite popular and useful for young people today. Phone is a very beneficial tool for us in terms of calling, learning for entertainment, communicating with friends through websites. In learning, it helps us to answer confusing questions in school. practice. Phones make it easy to communicate with friends in every part of the country, even the world, and easily talk to each other about hobbies. After each class, a stressful job, we should not overdo it on our phones, causing eye problems such as nearsightedness, ... even blindness. That fact is the cause of depression, decreased concentration, decreased ability to think creatively, people become weak, sensitive to outside influences.
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