A mobile phone is a conveyable device, which was invented in the 20th century. It was one of the best inventions or communication gadgets of 20th Century. It is one of the convenient devices but nowadays mobile phones are creating problems in our lives. Mobile phones were invented just for receiving calls and for connecting to the friends, relatives and the people around, but it has become a toy of every child. Even 2 or 3 years old children get attracted to these gadgets, teen-agers below 18 years are using smart phones in great numbers and it is creating barriers in their studies. It’s the age where youngsters have to focus on their studies but they are using these time-wastage gadgets. On the other hand, in many schools small kids are using smart phones for their studies rather than using copies. Excessive use of mobile phones reflects badly on the young generation. Smart phones lessen the interaction among family, parents, neighbours and other relatives. Hence, they are not giving their precious time to their studies because they are busy in playing games and using social networking sites on smart phones. According to the research, Pakistan is one of those dominant countries where mobile phone usage has reached to its extreme within a very short period of time. Mobile phone users in Pakistan dropped down to 114.7 million and almost 77 % of smart phone users are just 21 to 30 years old in Pakistan. Rays emitted from smart mobile phones are affecting youngsters. According to a research, the teenagers who excessively use their cell phones are more prone to disrupted sleep, restlessness, stress and fatigue. We shouldn’t use mobile phones in excess because they are playing with individuals’ lives. Government should prohibit these smart phones usage for below 18 years because they are badly impacting on the mental health of the younger generations.