After reading some forum regarding the facebook news feed problem on mobile (Facebook : No Internet Connection Problem), I found a temporary solution and hope that it will work for you. Note that once you quit facebook app, the same problem will come up and do the same procedure below, so its better to let facebook runs in the background.
Heres what you can do:
Step 1: At the facebook home panel, Click on Account.
Step 2: Click on Help Center
Step 4: Log-in and enter password, check on “Keep me logged in”.
Please take note that this method is only a temporary solution while waiting for facebook update. This method may not be working on some user. My apology.