In order to use the Facebook application on your mobile device, first you need to remove the old one. After you did this, visit the Ovi Store page from your phone, to download a version of the application that is compatible with your device. When you first connect to your account, the loading should take a little longer because of all the information that needs to be downloaded. The Facebook application is known to encounter a few errors, that's why it's best to keep it up to date at all time.