1) In this tutorial, we'll see how to activate your phone with Facebook mobile. This is useful if you want to receive SMS notifications.
2) Go to Account, then click Account Settings.
3) Click Mobile, and then click Register for Facebook Text Messages.
4) Select your country and mobile carrier, then click Next.
5) Before you continue, you should make sure your phone has the ability to receive SMS messages. Then, you will need to text the letter F to 32665. Then enter the confirmation code, and click Next.
6) That's it! You have now activated Facebook Mobile and can receive friend requests, messages, wall posts, and status updates on your phone and more.
7) Turn text messages on or off and choose the notifications you want to receive.