Student essay written in en (native language: French, CEFR level: B1, field of study: Sciences de l'education)

So today I am giving my opinion on a new technologie. Smartphones first appeared about 15 years ago. Nowadays every households owns atleast one smartphones. Since few years, we can definetely see that this technologie is spreading to an ever-younger audience. This leds to many development issues caused by screens as eyes problem or speaking under-development. 
As a student in a bachelor's degree in education, i really see smartphones as an issue. I think they can be used in a very educational and good way but in it everyday used it's more an educational issue than a good way to learn. It actually leads to focusing issues, ADHD and things like that makes learning harder. Moreover, every years children can be exposed to adult content wich is very inappropriate and shocking.