1. From the Home screen, tap the App Store icon.
2. At the bottom right of the screen, tap the Updates symbol. If there is a Facebook update available, you will see Update next to the app. The same is true for any other apps that need to be updated.
3. To update each app individually, tap the Update icon next to Facebook or another app.
4. To update many applications at the same time, press the Update All icon.
After you've updated your applications, restart your iPhone and try loading Facebook again to check whether it's still operating properly.
