lastpass
  • Articles
    • "LastPass Customer Support": What You Need to Know
    • How to Reach LastPass Support: "LastPass Support Phone Number"
    • LastPass Business Support: Secure and Scalable Assistance for Teams
    • How to Find the "LastPass Contact Phone Number" for Support?
    • How to Reach the "LastPass Support Number" for Help and Assistance?
    • LastPass Premium Support: How To Reach LastPass Premium Support?
    • LastPass Chat Support: How Do I Contact LastPass Chat Support?
    • A Complete Guide to "LastPass Telephone Support"
    • LastPass U2F Support: How To Reach LastPass U2F Support?
    • LastPass FIDO2 Support: Step-By-Step Guide
    • LastPass OTP Support: Secure Your Account with One-Time Passwords
    • LastPass Business Support Phone Number: A Simple Guide
    • LastPass Customer Service: A Simple Guide
    • LastPass Login Account: How To Login LastPass Account?
    • LastPass Login in My Account: A Complete Guide
    • LastPass Business Account Login: Step-By-Step Guide
    • LastPass Account Recovery: Step-By-Step Guide
    • How Do I Fix "LastPass Not Working"?
    • How To Fix LastPass Not Working on iPhone?
    • LastPass Not Working on Android: Quick Solution
    • How To Fix LastPass Not Working on Firefox?
    • LastPass Not Working on iPad: How To Fix Issues
    • How to Create a LastPass Account: A Step-by-Step Guide
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On this page
  • Common Problems: LastPass Not Working on iPhone
  • 1. Update the LastPass App and iOS
  • 2. Fix LastPass Autofill Issues on iPhone
  • 3. Sync the Vault Manually
  • 4. Re-enable Face ID or Touch ID
  • 5. Reinstall the App
  • 6. Contact LastPass Support
  • Conclusion
  1. Articles

How To Fix LastPass Not Working on iPhone?

Are you experiencing issues with LastPass not working on iPhone? Whether the app won’t open, autofill fails, or Face ID isn’t functioning, this guide will walk you through the most common problems.

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Last updated 2 days ago

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Are you experiencing issues with LastPass not working on iPhone? Whether the app won’t open, autofill fails, or Face ID isn’t functioning, this guide will walk you through the most common problems and how to resolve them. LastPass is a powerful password manager, but like any app, it can sometimes misbehave—especially on mobile devices.

Common Problems: LastPass Not Working on iPhone

Users commonly report several issues related to LastPass not working on iPhone, such as:

  • The LastPass app crashes or won’t open

  • Face ID or Touch ID isn’t recognized

  • Autofill doesn’t work in Safari or other apps

  • Vault items are missing or won’t sync

  • Unable to log in or authenticate

If any of these problems sound familiar, the solutions below can help get your iPhone and LastPass back in sync.

1. Update the LastPass App and iOS

The first step when LastPass is not working on iPhone is to ensure that both the app and your iOS system are up to date:

  • Go to the App Store, search for LastPass, and check for updates.

  • Navigate to Settings > General > Software Update and install the latest iOS version.

  • Restart your iPhone after updates are complete.

Keeping your software current can resolve compatibility and performance issues.

2. Fix LastPass Autofill Issues on iPhone

If LastPass autofill is not working on iPhone, follow these steps:

  1. Go to Settings > Passwords > AutoFill Passwords.

  2. Make sure AutoFill Passwords is toggled on.

  3. Select LastPass as your default password manager.

  4. Reopen the app or browser you're using and test autofill again.

Autofill may also fail if vault items aren't syncing properly, which leads us to the next step.

3. Sync the Vault Manually

When you notice LastPass not working on iPhone because your data isn’t up to date:

  • Open the LastPass app.

  • Tap the Settings gear icon.

  • Select Account Settings > Vault > Sync Now.

This will force a manual sync of your vault data and may restore missing credentials.

4. Re-enable Face ID or Touch ID

If Face ID is not working with LastPass on iPhone:

  • Open the LastPass app and go to Settings > Security.

  • Turn Face ID off, then back on again.

  • Ensure Face ID is enabled in your iPhone settings under Face ID & Passcode.

This can help fix biometric login issues that may appear after an iOS or app update.

5. Reinstall the App

Still seeing LastPass not working on iPhone? Try uninstalling and reinstalling the app:

  1. Tap and hold the LastPass app icon until you see the “Remove App” option.

  2. Delete the app and restart your iPhone.

  3. Reinstall LastPass from the App Store and log in again.

This resets any corrupted settings or installation bugs that might be causing issues.

6. Contact LastPass Support

If none of the fixes work, and LastPass is still not working on your iPhone, it may be time to contact LastPass Support. They can help investigate account-specific problems or known app bugs that require a deeper technical fix.

Conclusion

When you rely on LastPass to manage all your passwords, it can be frustrating to run into issues—especially on your mobile device. If you’re facing LastPass not working on iPhone, don’t worry: most issues are easy to resolve with basic troubleshooting. From updating the app to adjusting autofill settings and syncing your vault, these steps should get everything back on track.

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