In this tutorial, you will learn how to appear offline to some people in #Facebook on Android, iPhone or iPad. Open a conversation in the Facebook Messenger app. Tap on the message text field. Tap on their name at the top of the conversation page. Tap on the "Block" option. Tap on "Block Messages and Calls". Tap on "Block" to confirm. This will prevent the person from seeing that you are online, though it will also prevent you from receiving any messages and calls from them. That’s all! 🎵 Music