I don't have numbers from Instruments, but anecdatally ;), both my wife and I experienced substantially shorter battery life when we had Messenger installed bec

I don't have numbers from Instruments, but anecdatally ;), both my wife and I experienced substantially shorter battery life when we had Messenger installed because it was always waking up in the background—even if we weren't using it. Messenger may be a little more efficient when running, but it wants to run all the time, which is less efficient. http://www.tuaw.com/2013/06/04/developer-suspects-facebook-app-is-behind-iphone-battery-drain/ http://www.tuaw.com/2013/06/04/developer-suspects-facebook-a... http://www.reddit.com/r/iphone/comments/1xyap9/ http://www.reddit.com/r/iphone/comments/1xyap9/