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On an iPhone running iOS 18 or later, you can require Face ID to open Facebook by touching and holding the Facebook icon on the Home Screen and tapping Require Face ID. Facebook has no Face ID switch of its own. The lock comes from Apple’s built-in app lock, so it works the same way for any app that supports it, and it applies only to the iPhone where you set it.
Lock Facebook with Face ID
Before you start, you need an iPhone with Face ID, or a device with Touch ID or a passcode, running iOS 18 or later. Apple introduced app locking in iOS 18, as stated in Apple Newsroom’s June 10, 2024 announcement of the release.
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- Go to the Home Screen and find the Facebook icon.
- Touch and hold the icon until the quick actions menu appears.
- Tap Require Face ID. On devices without Face ID, the option reads Require Touch ID or Passcode.
- Tap the requirement again, then authenticate with Face ID, Touch ID, or your passcode.
From then on, Facebook asks for authentication before it opens.
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Lock only or lock and hide
Locking and hiding are separate choices. You can use either, or both.
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| Option | Where the Facebook icon appears | Authentication to open | Where the app name can still appear |
|---|---|---|---|
| Require Face ID (lock only) | Stays on the Home Screen | Required | Not stated in Apple’s guide |
| Hide and Require Face ID (lock and hide) | Moves to the Hidden folder at the bottom of App Library | Required | Settings, Screen Time, Battery settings, and App Store purchase history |
To hide the app as well, touch and hold the Facebook icon and choose Hide and Require Face ID. Authenticate, then tap Hide App. Apple’s guide, “Lock or hide apps on your iPhone” (published October 2025), notes that hidden apps can still show their names in those system locations, so hiding reduces visibility on the Home Screen rather than erasing every trace.
What the lock does and does not change
- Opening Facebook requires authentication each time the app is launched from a locked state.
- Some Facebook information is kept out of notification previews, search, Siri suggestions, and call history.
- Opening the app does not permanently unlock it. It locks again after you quit the app.
- The setting does not sync through iCloud, so you need to set it on each iPhone you use.
Apple’s guide puts the device-level behaviour this way: “When you lock or hide an app on your device, it’s only locked or hidden on that device.”
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- Online video installation instruction: Easiest Installation - removing dust and aligning it properly before actual installation,enjoy your screen as if it wasn't there.
If Require Face ID does not appear
- Confirm the iPhone runs iOS 18 or later. Earlier versions do not include the feature.
- Make sure you are pressing the icon on the Home Screen itself, not in App Library or search results.
- If the option is still missing after updating, Apple’s guide does not list a further fix or a complete list of compatible devices, so Apple Support is the next place to check.
Facebook is not the same as Messenger
Meta’s Newsroom announcement dated July 22, 2020, titled “Messenger Introduces App Lock and New Privacy Settings,” describes a separate feature for Messenger. Jay Sullivan, Director of Product Management, Messenger Privacy and Safety, wrote: “App Lock uses your device’s privacy settings like fingerprint or face authentication to unlock the Messenger app, and your touch or face ID is not transmitted to or stored by Facebook.”
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That statement is about Messenger. It does not show that the Facebook app has a matching in-app setting. To lock the Facebook app on an iPhone, use the Home Screen method above.
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Where this guide stops
This guide covers iPhone only. Apple’s app lock is an iPhone feature, and this article does not describe how to lock Facebook on Android or in a web browser. Face ID itself stores its data on the device: Apple’s 2017 “Face ID Security” document states that Face ID data remains encrypted and on-device.
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