A new feature on WhatsApp's latest update allows users to send messages even when there is no network or internet connection in the smartphone. In a similar feature that is present in Facebook Messenger, emails and messages, WhatsApp in its latest iOS update enables users to queue up messages even if they are offline.

Does Facebook Messenger use data or WiFi?

12. Facebook Messenger does use data to send and receive messages across the app and unless you have a Wi-Fi connection, it will count towards your cellular data plan.

Can you call on Messenger without WiFi?

The only ways you can call someone without WiFi is either by apps such as Pinngle Safe Messenger that offer a call-back feature where the server connects both users or by apps that offer you to earn free credits to make international calls without being connected to the WiFi.