Nowadays cell phone has became extremely popular.Almost everyone has a cell phone and everybody can be contacted anytime.It is like human's third hand.But as we know every coin has its two sides,it also applies to cell phone.
The good side of it is the convenience,now we do not need to worry about we can't reach to anyone including our relatives,our friends,our classmates...You can talk to them anytime at any place,which is impossible a few more decades ago.
The bad side of it is we spend too much on the cell phone.We are too lazy to really meet somebody,since we can just give him/her a phone call to discuss the thing.The students spend too much on playing games in cell phone,which affacts their study...