Been having difficulties backing up chats in the past couple of months, with the app showing backup in progress for more than half a day without any progress. That attempt to backup drains so much battery life. Its very buggy, drains our battery life, and delivers no results.. it is becoming very frustrating to the users. Thought was my phone's issue as i just changed it. However upon reading other people's comment. Whatsapp better be looking into this before they lose their market share.