Once you're connected to a Wi-Fi pipeline, video ads will download on your phone. According to Facebook, even if you're not on Wi-Fi when you actually view the ads, because they were downloaded while you are on Wi-Fi, they will not count against your monthly data usage. Eventually, Facebook plans on downloading the ads regardless of your connectivity.
If you're concerned that all the videos in your NewsFeed will use up your monthly data allowance, you can go into the app's settings and block the videos from appearing. Another option allows some video to automatically play over a Wi-Fi connection only. But hey, that is nothing new for our readers. A bit more than two weeks ago, we told you about changing the settings so that the videos would auto-play on Wi-Fi only.