The downsides - excessive use of electronic devices such as mobile phones, tablets, and computer desktops can cause physical and mental damage to children. According to a study, a child will likely to become overweight and develop seizure and vision problems when they spend too much time using electronics. Advantages - For children younger than preschool age, electronic devices may help to stimulate the senses and imagination. Some use may help to promote listening ability, learning sounds, and speech. Electronic devices and games may encourage cognitive learning and the development of analytical skills.