Introduction and conclusion

Introduction:

Teenagers have problems to study because their mobilephone is always next to them. Technology, as many people said, is increasing our communication, for instance between 2 countries like Spain and Rusia that are too far. But on the other hand sometimes don´t help us like when you have to study,  when you cheet in a exam or when you are concentrate and then a whatsapp sound. The average teenagers who passed all the exams are less nowadays, than a few years ago, when wifi didn´t exit. If you have to study, as a tip put your mobile out of the room.
Conclucion: In short teenagers decrease their concentration when they use their mobile while they are studying. But as we know, the mobile is useful to know what is happening in the others countries. Mobile help us cheeting, and decrease our concentration this are the disadvantages of using a mobile. Teenagers studied more when wifi didn´t exit.