Apps like Facebook are routinely updated in order to stay up with Apple's latest platform improvements. App updates, like firmware upgrades, provide bug fixes to resolve issues caused by defects in the program. Follow these procedures to see if there are any accessible updates for Facebook and other apps:

• From the Home screen, tap the App Store icon.
• At the bottom right of the screen, tap the Updates symbol.
• Look for the Facebook application. If an Update option appears next to Facebook, tap it to install the most recent Facebook update.
• Instead of tapping the Update All button if you see numerous app updates available, press the Update All button.