How to Lock Lost iPhone

Alicia Santos

iPhone, Tutorials

Have you ever lost your iPhone and worried about someone accessing your personal information? It’s a common concern, but fortunately, Apple provides various features to help you secure your device even if it’s lost or stolen. In this tutorial, we will guide you on how to lock your lost iPhone using the Find My iPhone feature.

Step 1: Enable Find My iPhone

If you haven’t already done so, the first step is to enable the Find My iPhone feature on your device. This feature allows you to track and remotely control your lost or stolen iPhone. To enable it:

  • Go to Settings: Open the Settings app on your iPhone.
  • iCloud: Scroll down and tap on “iCloud”.
  • Find My iPhone: Tap on “Find My iPhone”.
  • Toggle On: Toggle the switch next to “Find My iPhone” to enable it. You may be prompted to enter your Apple ID password.

Step 2: Use Find My iPhone from another device or computer

If you’ve lost your iPhone, don’t panic! You can use another iOS device, Mac, or Windows computer with internet access to locate and lock it remotely:

  • Visit Open a web browser and go to
  • Sign in: Sign in with your Apple ID and password.
  • Find My iPhone: Click on “Find My iPhone” from the iCloud homepage.
  • All Devices: At the top of the page, click on “All Devices” and select your lost iPhone from the list.
  • Lost Mode: In the device’s information window, click on “Lost Mode”.
  • Lock Device: Follow the on-screen instructions to set a passcode and custom message to be displayed on your lost iPhone. Click “Lock” when you’re done.

Step 3: Additional Options

In addition to locking your lost iPhone, Find My iPhone offers a few extra options to help you protect your data:

  • Erase iPhone: If you suspect that your iPhone won’t be recovered or if you have sensitive information on it, you can choose to erase all its contents remotely. This will restore your device to factory settings and remove all personal data.
  • Play Sound: If you believe that your iPhone is nearby but can’t find it, you can make it play a sound to locate it more easily.
  • Lost Mode Message Update: If you want to update the custom message displayed on your lost iPhone in Lost Mode, simply go back to the Find My iPhone webpage and click on “Lost Mode” again. You can change the passcode or message as needed.


Losing an iPhone can be a stressful experience, but with Apple’s Find My iPhone feature, you have tools at your disposal to lock and protect your device remotely. By enabling this feature and following the steps outlined in this tutorial, you can ensure that even if someone finds or steals your lost iPhone, they won’t be able to access your personal information. Stay vigilant and keep your devices secure!

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