How to Enable a Number of Hidden Internal Settings in the Facebook App for iOS
If you'd like to show some hidden internal settings in your Facebook application for iOS, then check out a new free jailbreak tweak called Facebook Internal Settings
by iOS developer Karen Tsai.
Most of these settings are going to make almost no sense to the user, but it's great for tinkerers that want to play around with them.
Some of the settings include an application crash simulator, options for customizing the News Feed, options for customizing the composer, options for customizing the Photo and Video picker, URL testing, feed refresh interval options, performance testing, cache clearing options, and more.
The hidden internal settings are accessed from the bottom of the "More" tab in the Facebook application.
If you would like to get your hands dirty with these internal settings, then the free Facebook Internal Settings tweak is available for free in Cydia's BigBoss repository right now. The tweak works on iOS 5 through iOS 7.0.6 and runs on both 32-bit and 64-bit iOS devices. You will need to have the free Facebook application from the App Store installed to use this tweak. There are no options to configure for the tweak.
Facebook Internal Settings
iPhone 5 running iOS 7.0.6