The consumer finance website MoneySavingExpert.com first flagged the issue.
Smartphone users are being advised to change the default setting in the Facebook app to ditch the auto-streaming function.
On iOS devices:
Enter Settings and scroll down to Facebook
In the video section, switch Auto-play to “Off”
On Android devices:
Enter the Facebook app
Tap the menu button, then “Settings”
Tap “Videos” and switch Auto-play videos to “Off”
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