Some people might complain, but mobile phones are really convenient !
When you are late at an appointment, you can call and let the people who are waiting for you know.

And then, you can call from anywhere and if there is an emergency, you can let people know where you are.
Yes, but there are drawbacks as well !
You can say what you want to say, but with your mobile phone, you always have someone on the line.
The mobile phone, in a way, it is like Big Brother ! Where are you, and what are you doing, and when are you coming, and who is laughing with you, next to you?
This sounds good, but nowadays we cannot do without !