It seems like the battery in my iPhone has not been lasting as long as it used to. So based on the link below, I just deleted the Facebook app and am using a combination of the FB website and the FB Messenger app. (I saved a bookmark to the Home Screen for quick access.)
Developer suspects Facebook app is behind iPhone battery drain | TUAW – The Unofficial Apple Weblog.
It will be interesting to see if this helps, although it might also be my Pebble smartwatch sucking power due to the Bluetooth connection. However, I haven’t seen much difference even when I don’t connect it.
I’ll update this post in a few days with my findings…
UPDATES:
Obviously too early to call, but the battery indicator has been sitting at 100% for about a half hour!
2013-07-01:
A strange thing happened. After deleting the FB app, I could go about 12-1/2 hours and be left with 15-20% of my battery. So I re-installed the FB app and it didn’t have any noticeable impact on battery life! So my suggestion is to delete the FB app and re-install it.