When activating this hidden nickname mode, also known as turning off chat, in your friends' chat and online lists, you won't be in Online status. Therefore, others won't know and bother you. However, you'll still receive messages as usual.
The method to hide your nickname on the Facebook app is as follows:
Step 1: Launch the Facebook app as usual, then tap on Menu at the top right corner.
Step 2: Tap on the Settings icon resembling a cogwheel to access settings.
Step 3: A window will appear indicating that the Online mode is currently On. Click on it to turn it Off.
Step 4: You are now in hidden nickname mode and your online friends will not be displayed to you.
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Here's a guide to help you hide your nickname on Facebook, for moments when you don't want to chat, for relaxation without disturbance, or for any personal reasons. Additionally, you can download popular games like Top Eleven and Need for Speed for more entertainment.
