Hello friends I am using WhatsApp since 2 years when I have bought an android mobile phone.WhatsApp is a like a messaging app in which you can share photos, videos, musics and much more. Today nobody can live without WhatsApp. Everybody checks his WhatsApp in almost in half an hour.[LAYOUT & CONCEPT]It is faster than any messenger app as well as emails. WhatsApp comes in someabout green colour. Its interface and GUI is pretty cool. It is so useful.[FEATURES]WhatsApp allows user to send many types of format of messages. It also allows to do video and voice chat with loved ones. In this app we can create groups and send our opinions to many people at once. It also allows to put your status for 24hrs. It is easy to use and it is very helpful. The desing made by developer of this app very attractive. It is easy to handle.Overall it is world’s best messaging app. It became a part of our daily life. It is very usefull.Thank You.