# How to lock LINE on iPhone > Lock LINE on iPhone: touch and hold its icon and tap Require Face ID (iOS 18+). You can also hide it in App Library. Or use LINE's Passcode lock. Source: https://lockphotosoniphone.com/lock-app/line/ · Updated 2026-11-01 · By VaultForYou ![LINE quick actions menu with Require Face ID on iPhone](https://lockphotosoniphone.com/img/lock-app--line.png) - Require Face ID - Can hide - In-app: Passcode lock App Store app by LY Corporation. LINE keeps chats, calls and photos in one app. - **Lock:** Yes - **Hide:** Yes - **Needs:** iOS 18+ - **In-app lock:** Yes **Quick answer:** To lock LINE, touch and hold its icon on the Home Screen and tap **Require Face ID** (Require Touch ID or Passcode on some iPhones). Needs **iOS 18 or later**. To also hide it, choose **Hide and Require Face ID**, then **Hide App**: it moves to the locked Hidden folder in App Library. LINE also has its own **Passcode lock**, which can use a code that isn't your iPhone passcode. What it covers ## What locking LINE covers - **Require Face ID**Whole app, iOS 18+ - **Hide in App Library**Hidden folder, locked - **LINE's own lock**Passcode lock - **Notification previews**Content kept out when locked - **Search and Siri suggestions**Content kept out when locked - **Call history**Calls kept out when locked - **Other devices**Lock doesn't sync via iCloud - **Someone with your passcode**Passcode still opens it Good to know about LINE - LINE warns that a forgotten passcode means deleting and reinstalling the app, losing chats you didn't back up. 6 steps ## Lock and hide LINE Steps 1–3 lock it. Steps 4–6 also hide it. **Tap:** Hold icon › Require Face ID › Hide and Require Face ID › Hide App 1. **Touch and hold the LINE icon.** On the Home Screen, touch and hold the app icon until the quick actions menu opens. 2. **Tap Require Face ID.** Tap **Require Face ID**. iOS 18 or later. 3. **Confirm with Face ID.** Confirm with Face ID or your passcode. From now on the app asks before it opens. 4. **Tap Hide and Require Face ID.** After **Require Face ID** in the quick actions menu, tap **Hide and Require Face ID** (Touch ID or Passcode on some iPhones), then authenticate. 5. **Tap Hide App.** Tap **Hide App**. LINE leaves your Home Screen and moves to the **Hidden** folder at the bottom of App Library. 6. **Open it from App Library.** Swipe left past your last Home Screen page, tap **Hidden** at the bottom of App Library, authenticate, then tap the app. Built into LINE ## LINE's own lock: Passcode lock **Tap:** LINE Home › Settings › Privacy › Passcode lock LINE Home › Settings › Privacy › **Passcode lock**. - **Opens with:** A LINE passcode, with optional Face ID or Touch ID - **Covers:** The LINE app - **Own code:** Yes Compare ## Ways to lock LINE, side by side | Method | Opens with | What it covers | Code separate from passcode | Needs | | --- | --- | --- | --- | --- | | [Require Face ID](https://lockphotosoniphone.com/glossary/require-face-id/) | Face ID, Touch ID or your iPhone passcode | The whole LINE app | No | iOS 18 or later | | Hide in App Library | Face ID, Touch ID or your iPhone passcode | Removes the icon from Home Screen, App Library and search | No | iOS 18 or later | | Passcode lock (in LINE) | A LINE passcode, with optional Face ID or Touch ID | The LINE app | Yes | Any recent LINE version | | [Guided Access](https://lockphotosoniphone.com/locks/guided-access/) | A separate Guided Access passcode | Keeps your iPhone in one app while someone holds it | Yes | Any iOS version | Older iPhones ## LINE on iOS 17 and earlier Require Face ID and hidden apps arrived in iOS 18. Before that: - **Passcode lock:** LINE Home › Settings › Privacy › **Passcode lock**. Doesn't need iOS 18. - **Guided Access:** Settings › Accessibility › Guided Access. Keeps your iPhone in one app; [steps](https://lockphotosoniphone.com/locks/guided-access/). - **Screen Time:** Settings › Screen Time › App Limits. Built for time limits, not privacy. Questions ## Locking LINE: questions ### How do I lock LINE on iPhone? Touch and hold the LINE icon on your Home Screen, tap Require Face ID, then confirm with Face ID, Touch ID or your passcode. iPhones with Touch ID say Require Touch ID instead. You need iOS 18 or later. From then on LINE asks before it opens, and relocks after you quit it. ### Can I hide LINE on iPhone? Yes. LINE comes from the App Store, so after Require Face ID you can tap Hide and Require Face ID, then Hide App. It moves to the locked Hidden folder at the bottom of App Library. Its name still appears in Screen Time, battery usage and App Store purchases. ### Should I use Passcode lock or Require Face ID? Passcode lock, built into LINE, covers the LINE app. It opens with a LINE passcode, with optional Face ID or Touch ID. Require Face ID locks the whole app instead, with Face ID or your passcode. Passcode lock can use a code that isn't your passcode, so it keeps out someone who knows your passcode. ### Does locking LINE hide its notifications? Apple says information inside a locked app won't appear in notification previews, search, Siri suggestions, CarPlay or your call history. The lock applies only to the iPhone where you set it; the locked status doesn't sync to your other devices through iCloud, so lock it on each one. ### How do I lock LINE on iOS 17 or earlier? Require Face ID needs iOS 18. On older versions, use Passcode lock inside LINE. Guided Access keeps your iPhone in one app while someone holds it. Updating to iOS 18 or later, if your iPhone supports it, adds Require Face ID. Sources ## Where these facts come from - [Apple iPhone User Guide: Lock or hide an app](https://support.apple.com/guide/iphone/lock-or-hide-an-app-iph00f208d05/ios) - [LINE Help Center: Setting a passcode lock](https://help.line.me/line/smartphone?lang=en&contentId=20023658) LINE is a trademark of its owner. This site isn't affiliated with LY Corporation or Apple. ## Related - [Lock WhatsApp](https://lockphotosoniphone.com/lock-app/whatsapp/) - [Lock Messages](https://lockphotosoniphone.com/lock-app/messages/) - [Lock Telegram](https://lockphotosoniphone.com/lock-app/telegram/) - [Lock Signal](https://lockphotosoniphone.com/lock-app/signal/) - [What is App Library](https://lockphotosoniphone.com/glossary/app-library/) - [Every app you can lock](https://lockphotosoniphone.com/lock-app/)