When you receive a Threads notification on your iPhone, the lock screen shows a preview of the message or post. This preview can reveal private content to anyone who glances at your phone. The issue is caused by iOS Notification Center settings that allow app notifications to display message previews by default. This article explains how to turn off Threads lock screen previews so your notifications remain hidden until you unlock your device.
Key Takeaways: Hide Threads Notifications on Lock Screen
- Settings > Notifications > Threads > Show Previews: Change this to “When Unlocked” or “Never” to hide message content on the lock screen.
- Settings > Notifications > Show Previews > When Unlocked: A global iOS setting that hides all notification previews until the phone is unlocked.
- Settings > Notifications > Threads > Lock Screen Appearance: Uncheck “Lock Screen” to remove Threads notifications entirely from the lock screen.
Why Threads Shows Message Previews on the Lock Screen
iOS manages notification previews through two layers. The first is a global setting called Show Previews, which applies to all apps. The second is a per-app setting that lets you override the global behavior for individual apps like Threads. By default, iOS sets Show Previews to Always, meaning any incoming notification displays a snippet of the message text on the lock screen. Threads inherits this default behavior. When you receive a reply, mention, or direct message, the sender’s name and a short preview appear on your lock screen. This is not a Threads-specific bug or feature. It is the standard iOS notification behavior. Disabling the preview requires changing either the global setting or the per-app setting for Threads.
Steps to Disable Threads Lock Screen Preview on iOS
Follow these steps to stop Threads from showing message previews on your iPhone lock screen. You can choose between hiding previews for only Threads or for all apps.
Method 1: Change Threads Notification Preview Setting
- Open the Settings app on your iPhone
Tap the gray gear icon on your home screen. - Tap Notifications
Scroll down and select Notifications from the list of settings. - Scroll down and tap Threads
Find Threads in the list of apps and tap it. - Tap Show Previews
This option is located under the Notification Grouping section. The current value is likely Always. - Select When Unlocked or Never
Choose When Unlocked to show previews only after you unlock your iPhone with Face ID or passcode. Choose Never to hide previews entirely. The lock screen will then show only the app name and sender name without message text.
Method 2: Remove Threads Notifications from Lock Screen Completely
If you do not want any Threads notifications to appear on the lock screen at all, you can disable the lock screen appearance for the app.
- Go to Settings > Notifications > Threads
Follow steps 1 through 3 from Method 1. - Under the Alerts section, uncheck Lock Screen
You will see three checkboxes: Lock Screen, Notification Center, and Banners. Uncheck Lock Screen. Threads notifications will no longer appear on the lock screen. They will still appear in Notification Center and as banners when the phone is unlocked.
Method 3: Change the Global Show Previews Setting
This method applies the same preview behavior to all apps, including Threads.
- Open Settings and tap Notifications
Tap Notifications at the top of the Settings menu. - Tap Show Previews
This is the first option under Notifications. - Select When Unlocked or Never
When Unlocked hides previews on the lock screen for all apps. Never hides previews everywhere, including in Notification Center. The global setting overrides individual app settings unless the app has its own Show Previews set to Always.
Common Issues After Changing Threads Lock Screen Preview
Threads Notifications Still Show Preview on Lock Screen
If you changed the Threads Show Previews setting to When Unlocked or Never but the lock screen still shows message text, the global Show Previews setting may be overriding it. Go to Settings > Notifications > Show Previews and make sure it is not set to Always. If the global setting is Always, individual app settings cannot hide previews on the lock screen. Change the global setting to When Unlocked or Never.
Threads Notifications Disappeared Entirely
If you unchecked Lock Screen under Settings > Notifications > Threads and also changed Show Previews to Never, Threads notifications may stop appearing entirely. To restore them, recheck Lock Screen and set Show Previews to When Unlocked. This keeps notifications on the lock screen but hides the message content until you unlock your phone.
Can I Hide Preview Only for Direct Messages in Threads?
iOS does not offer per-message-type preview settings. The Show Previews setting applies to all notifications from Threads, including replies, mentions, likes, and direct messages. If you want to hide only direct message previews, you must disable Threads notifications for direct messages inside the Threads app. Open Threads, tap your profile icon, tap the two-line menu icon, tap Notifications, and turn off Direct Messages. This stops all DM notifications from appearing on the lock screen.
Threads Lock Screen Preview Settings: iOS Global vs Per-App
| Item | Global Setting | Per-App Setting (Threads) |
|---|---|---|
| Location | Settings > Notifications > Show Previews | Settings > Notifications > Threads > Show Previews |
| Scope | All apps on the device | Only the Threads app |
| Options | Always, When Unlocked, Never | Always, When Unlocked, Never |
| Override behavior | When set to Always, overrides per-app When Unlocked or Never | When set to When Unlocked or Never, applies only if global is not Always |
| Best use case | Hide previews system-wide for privacy | Hide previews only for Threads while keeping others visible |
You can now control exactly when Threads shows message previews on your lock screen. Start by changing the Threads Show Previews setting to When Unlocked. If you need stronger privacy, use the global Show Previews setting to hide all notification previews until you unlock your phone. For maximum privacy, uncheck Lock Screen under Threads notification settings to remove all Threads notifications from the lock screen entirely. A final tip: combine the When Unlocked preview setting with a strong Face ID or passcode to keep your Threads messages private even if someone picks up your phone.