We have had a few queries on higher than normal Mobile data usage on Tablets and smartphones since Facebook started automatically playing video content as it comes into view on your screen.

Follow the instructions below to switch this feature off

 

For computers:
Go to your options drop-down menu in the top right.
Click "Settings"
Select the "Videos" link on the left.
Turn the "Auto-Play Videos" from "ON" to "OFF"

For Phones and tablet apps:
You can adjust your auto-play settings to On, Wi-Fi only or Off. If auto-play is On, the data used depends on the amount of time you spend watching a video. If you scroll past an auto-play video in News Feed, your phone will use less data than if you stop to watch it for a longer period of time. If auto-play is set to Wi-Fi only, no data will be used.


Android

Open the Facebook app
Tap your phone's menu button
Tap Settings
Scroll down and tap Video Auto-play
Choose an option 

iPhone and iPad (Not showing on all devices though)

Go to your phone or tablet's settings
Scroll down and tap Facebook
Tap Settings
Below Video tap Auto-play
Choose an option