Are mobile phones a useful tool?

 Mobile phones have changed our lives. Now we can do everything with only pressing a botton.

First of all, mobile phones are a useful tool when we use them to research or comunicate, they have been considered an useful and convenient tool for teaching and learning.

 In addition, mobile phones are usseles when we use them to talk with friends instead of going out and having fun.

 To sum up, I believe that mobile phones are a social way to communicte all over the word and are usefull for a lot of things when you use them correctly.