Students' Essays

The following is a student's answer to the question: "What are the good points and bad points of cell phones?"

It is convenient for me to know about international movement.  So I have come to understand long sentence of English better.  However, using cell phone inappropriately.  I receive inaccurate information.  So I should understand correctly.  For these reasons, it is convenient for us if we use properly, but it is dangerous for us if we use unsuitably.