手机为什么这么流行.英语作文

as we all know,the mobile phone is more and more popular now,we have a disguession between the way of mobile phone and the letters.
well,in my point of view.on the one hand,using mobile phone is more convenient and fast.But it is bad for us to write well.on the other hand,sending letters is good for us to write well,but it is not very convenient and fast.
the mobile phone helps us a lot,and it is the resean why it is more and more popular.it changed our life and make our lives more and more convenient.if we want to chat with our friends,using mobile phone is the better way.