This is a new feature being rolled out by Facebook. This will help you to stop yourself from Facebook for a few minutes/hours. If you don’t find this option on your iPhone or Android app no need to worry. Just keep your app updated and wait till this will automatically available to you.
As Facebook is rolling out this feature, most probably iPhone users can get this in few weeks from the date of lunch.
Although it’s not confirmed, you may have to wait till May 2020 to find this feature on your android phone (source)
No, This is not available for the “Lite” FB users yet (maybe in future). You need to use the main FB App to avail of this feature.
To activate the “Quiet Mode” on your Facebook App: Tap on the Menu icon. > Scroll to “Settings & Privacy“. > Tap on “Your time on Facebook“. > Find and tap the slider of “Quiet Mode” to turn it “On”. You can also set the timer to turn it off automatically after the desired time.
If enabled, this will hide the interface of your FB App. When you open the app during this locked period, a full-screen banner will stop you from using Facebook on your iPhone or Android and showing you the amount of time left to get back to Facebook.
To deactivate Quiet Mode on your FB App tap on the “Manage Quiet Mode” button located at the bottom of the full-screen banner. > This will take you to the Facebook app “Settings” and you can disable it there.
However, This quiet mode will be auto deactivated as you have set the timer while enabling it. You can follow the above steps if you need to turn it off before the scheduled time.
To mute the “Facebook Push Notifications” on your Facebook App: Tap on the Menu icon. > Scroll to “Settings & Privacy“. > Tap on “Your time on Facebook“. > Scroll to and tap on “Change notification settings” under ‘Manage your notifications’. > Tap on “Mute push notifications” to enable the feature. > Set a timer or Make it off permanently.
To re-enable Facebook Push Notifications on your FB App go to Menu > Settings & Privacy > Your time on Facebook > Change notification settings > Switch off “Mute push notifications” to disable it.
However, This should be auto deactivated if you have set the timer while enabling it. You can follow the above steps if you have not set the timer or need to turn it off before the scheduled time.