Hello friends I want to share my opinion about the smart phone chatting App name is WhatsApp so according to me WhatsApp is a good chatting app and there are so many good feature available in this app I am also using this have since one year and I am very satisfied with the services of this app I would always use the WhatsApp as my best chatting app ever because it have so many good feature Like even when the message is sent to that of particular person then one tick mark will come when the message is delivered to that particular person then to 2 marks will come and when he see this message 2 marks come in the blue colour it is very good , we can call to any person in the any corner of the world by the WhatsApp calling audio calling video calling through this feature is also very good and we can see that the person who are online or not and we can also send status and we can also put a status on our time line for the 24 hour and we can also watch the views of that status this feature is also very good and there are so many good thing available in this there are privacy things as we can hide it or archive it and all feature are good according to me it is the best chatting app I ever seen in my life