To play or use a smart phone for a long time, have many effects on health. First, using the smartphone leads to eyes problems. Such as, the eyes vision or eyes are blurry. The eyes do not focus texts and eyes pain. People who does not treat; also, it leads to serious impact. For example, blind, eyes cataracts, short-sighted and other. Another one effect on healthy is headache and dizziness. Staring at a screen smartphone for a long affects brain functions. A smart phone is the cause of dementia. This resulted in the recognition of brain and short-term memory and daily life. Last of all, not getting enough sleep has been related to some serious health risks. People who are stay up late because played a smartphone to night result in debility on the day and cannot work and do activity fully. In conclusion, there are many effects that played smartphone for a long time and affect health seriously for future.