Facebook Mobile sends text messages to your phone, which can be useful if you don't have a smartphone that can use the Facebook app. Even on the go, this utility enables you to get status updates from friends, receive notifications for friend requests, wall posts and other updates from your Facebook friends. When on the go, you can still update your status, search for phone numbers or upload photos and videos from your phone.
Login to your Facebook account. From your Facebook home page, select "Account Settings."
From the Account Settings menu, select the "Mobile" tab. Select "Register for Facebook Text Messages." Enter your country and cell phone carrier. The window then displays a code that you must text to Facebook.
Receive a text message from Facebook and use the code in the message to complete confirmation that you which to activate the Facebook mobile utility.