https://www.cnet.com/news/facebook-says-call-text-history-logging-requires-users-permission/

While some users' information is logged, the social media site said the function "has always been opt-in only." When the feature is enabled, the feature allows Facebook to see when a call or text was sent or received, the company said.

"You may have seen some recent reports that Facebook has been logging people's call and SMS (text) history without their permission. This is not the case," Facebook said in a statement. "People have to expressly agree to use this feature."