Facebook - Stop Playing Videos
Facebook in their recent changes, they have introduced a auto video playing feature. I understand it's not a welcome move and people may end up spending their data package for watching videos which they are not interested in.
So, how to get this disabled, read below
Step 1: Click on Settings
Step 2: Click on "Videos"
Step 3: Select the "Auto-Play Videos" setting and click on "off"
All done, no more data wastage by watching unwanted videos