WhatsApp update very few people know about..
Recently whatsaap has added disappearing message feature like snapchat
This feature is very helpful for the storage of your phone Because of this feature your chat is automatically deleted in 7 days.
In your phone of whom in the chat you had turned on disappearing message feature
This is same as a snapchat but there is one difference that it deletes message in 7days and in snapchat message will be deleted once you had seen that So i think this is very useful feature for all you have knowledge of that