Using electric devices are very benefits for leaning.Firstly, we can ask Google if we don't know some difficult excercises.Secondly, we can learn lessons on YouTube if we don't understand teacher' lessons at the school. Finally, we can connect with our friends to exchange results, ask them about lessons. Besides, learning by electric devices have disadvantages : harmful for your eyes, too depends on the phone make your brain can't thinking and you won't smart. So we must use the phone for learning right to have many advantages and less disadvantages.