Blackberry news not updating
Black Berry CEO Chen has previously explained that BB10 users were set to receive a further two "platform updates focused on security and privacy enhancements", with the first due to land in March 2016.
Periodically, updates to apps are made available to download and install.
When another app is running, it can potentially interfere with the ability of the Facebook app to properly function.
If you have closed all of the running apps on your phone and Facebook is still not working, hard reset your phone.
Continued problems with the Facebook app on your Black Berry phone could be an indication that the installation was faulty.
Uninstall and reinstall the app to ensure that it is properly installed.