A number of iPhones are experiencing battery life issues and some feel hot to the touch, possibly related to the iOS Facebook app. iLounge’s editors have seen both issues firsthand, and a number of tweets seem to verify there could be some sort of intermittent issue. Within the past five days, there have been a number of tweets on the matter, as a Twitter search for “Facebook app battery” shows. A post on blog.hagga.net took a look at the issue in May, and noted that a June update did not fix the problem. Facebook’s iOS app was last updated July 10. It’s hard to know for sure what is exactly causing the battery drain, though Facebook’s VoIP capabilities allow the app to run in the background, with no way of turning it off. The issue could be connected to something unusual happening on Facebook’s server, as well, or messaging notifications.