Dear Friend, This app works well, though I was using it for half an hour on Wi-Fi and 3G, when I went out and I was getting just 2G, even then it worked well, except the push notifications. They seemed to arrive a little late, but now worries, if you need a good and fast experience, along with basic needs of Facebook.
I must admit that, there are very little limitation within the app, you can update your status, add location, upload photos, tag friends and also can update activity. You can check notifications and friend requests.