speech on "are cellphones usefull"..

plz help meh...!

it depends on person to person that which person is using the cell phone like you are a child and you if you if you use of mobile phone at mostly impact bad on your knowledge and you stop studying because when you open a mobile phone you open a channel on it or you open a YouTube and you want to study on YouTube You chapter your any subject and when you open the YouTube you so many things have before like the funny videos and other knowledgeable things also and sometimes there is the unnecessary things there which should not be there for child but when you show them you try to know them and you waste your time and mostly the children with their time in cell phones so children should not be having cell phone because nowadays it is not important and it still renew cellphone they will not use their my own Minds and I think they should read their own textbooks inside instead of using the cell phones and other things is that cell phone if 1% cell phone must be with the child is should use for is the purpose for study purpose only because I did not no need no need to know the knowledge of whole world