I think mobile phones are a need because in modern day society, that's how everyone communicates and it would make things a lot harder to get in contact with people. Lots of jobs are based around social networking and not having a phone would make it hard to see whats out there. I think a phones a need because with the people surrounding us all having a phone, you not having a phone would make you feel very out of place. For example its different to people living in the bush because no one your with would have a phone in the bush either.