Are mobile phones a useful tool?

Today, the most people have a phone. What are the advantages and disadvantages?

This are advantages if you have a phone. I have a phone and I think that is very useful. You can speak with your family or with your friends. You can watch news and find out what is happening now. Can be very helpful. For example, if you get lost or in danger, you can warn to the police, to your fathers…

There is a disadvantage. I don’t know anymore. The phones usually are very expensive.

To conclude, I tkink that a phone is a very useful tool. You can do very things with it.