Friends whatsapp has become a important part of life you will not see any mobile phone without it.Friends whatsapp is used in every field such as in business field, in education purpose, for chating with friends, for sending important images documents etc.In the begining when whatsapp came it was having only chat feature but now a days a person can make a phone call and video call, share their present status and now a days you can also send pdf files.Friends I am listening they are also introducing a feature which will give a person 15 minutes time to unsend a wrong message like instagram