The application is all over good, but there are no settings that can secure privacy for us. Whenever you are using internet or Connected to internet it shows your everyone. this is very bad function and whatsapp needs to think about it should add function like fecebook hide online status. It’s layouts also simple and old fashioned. Are the basic functions and concepts are concept you can send messages including text, photos, videos and many more to people who are in your contacts and are using whatsapp.layout and Desing is ole fashioned in green layout. But we can also add custom layouts and photos in background.Features massaging, voice, video calling etc features.Usefulness nothing facebook is using whatsapp to gather information about us. So please keep check on your safety if you are using it.