Starting Friday, you can opt to use end-to-end encryption for the calls you make in Facebook Messenger and make your communications more private. Text chats in Facebook Messenger have had this option since 2016, but it’s new for calls. Facebook’s announcement notes that a large uptick in calls made via Messenger over the past year has prompted it to expand its encryption coverage.
Facebook claims that, when you turn encryption on, “nobody else, including Facebook, can see or listen to what’s sent or said.” It also says that you'll still be able to report an encrypted message if you need to. Facebook also has stated that it's begun testing these encryption features for group chats and plans to begin rolling them out in the future. Disappearing Messages controls have been updated, as well, to allow for a wider variety of timer options—from five seconds to up to 24 hours.