How to Mute a User on Facebook Messenger App on Android?br br Step 1: Open the Messenger App, and then sign-in to your Account.br br Step 2: Open the conversation with user that you want to block.br br Step 3: Now, Tap on 'i' link at the top right.br br Step 4: Tapn on 'Mute' icon, and then select the time frame for which you want to block the user.br br Step 5: Press the 'Ok' button.br br It's done.