Facebook updated its iPhone app on Saturday fixing several bugs and adding a number of new features to the app. Among the new features is the ability to watch Facebook videos from within the app. With the updated version you can also view and write on walls of events, and uploaded photos are now 720 pixels wide.

Bug fixes in Facebook 3.1.3 include:

• Could not comment on photos accessed from Notifications
• Could not upload photos smaller than a certain size
• No more than 2 notifications were highlighted as unread
• Status updates appeared out of order in News Feed
• Broken photo album links in News Feed
• Birthdays view had months in wrong order
• Last section of friend list was incomplete if you had fewer than 8 friends
• Notes with non-ASCII text were cut off at the end

Facebook 3.1.3 is a free update available from the App Store.