Drawbacks of mobile phones.

Mobile phone,could say it has some of drawbacks,such as anybody can calls if he or she gets your number and then she or he can disturb you.this is nosy also because if someone needs you directly he or she calls you, some times heard bad news of your phone from someone who calls you and may it's not good for us you know why?because if you work in big company or other places,so it will be bad for you if that job needs some thing from you, they can call you easy,could be bad some thing for you in that time because it makes you tired.