Smart device has changed the lives of the current generation. Most people are in touch with smartphone-tablet smart devices until sleeping after sleeping. People who are addicted to smart devices can not refrain from using these tablets in food tables, transport and toilet. With the rise of smart devices, the improvement in quality of life is seen in the general sense. A lot of work can be done with smart devices at home. Today, with the help of income-earning - the number of such people is not less in the world. Smart devices make a positive difference in our lives - not just that. Apart from making life easier, as well as responsible devices for various problems in our daily lives. A recent study showed that children spending more time with smartphones and tablets sleep less than other children. Use the touchscreen of mobile phones and tablets to sleep for 15 minutes per hour. Researchers say that these types of blue light diffuse from these devices - which destroy the human ability to sleep. Basically this is why children get reduced to sleep. However, these muscles increase the muscles of the body. Recently a new scientific study of the University of London revealed this information. 715 children under 3 years of age were studied. It has been found that, smart device addiction reduces sleep during night. But their sleep increases during the day. Dr team member Dr. Tim Smith said that every minute sleep is very important for proper development of the baby. Smartphones should be lowered to keep kids sleepy. Adjusting to the age and adjusting with age. He also said that, despite the evidence that children are sleeping in the use of smart devices, it is still unknown to the effect of adults.