Have your friend sign in to iCloud using their Apple ID to see their devices.

From the menu that appears, tap Use a different Apple ID in the smaller letters below the word 'Continue'.

Select Me from the options on the bottom of the screen.

Related: How to Find Your iPhone Even If It’s Dead or Offline Otherwise, you'll be shown the last known location of your iPhone.

If the lost iPhone is turned off, it is still trackable as long as you have iOS 15 or later and haven't disabled Find My.

So as long as other Apple devices are nearby, you will be able to track it.

If the lost iPhone is offline, the Find My app can still find the lost iPhone's current location using nearby Apple devices.

As long as you have Send Last Location enabled (this feature is enabled by default, so you would have had to manually switch it off), you can still see the last known location.

If the lost iPhone is dead, you can see the last known location but not the current location.

Multiple login attempts trigger extra iCloud security, so if you sign out and try to log back in, you might be asked to enter an authentication code from your lost device.

Once you have logged into iCloud from the Help a Friend feature, do NOT sign out until you find the device.

If you just sign in to iCloud on your friend's iPhone browser, you'll be asked to enter a 6-digit passcode (a definite problem if your device is lost).

The Help a Friend feature bypasses the two-factor authentication.

Follow the steps below and use the Help a Friend feature within the Find My app.

How to Find Someone’s iPhone: Important Notes Let's learn how to track an iPhone using your friend's iPhone. The Find My app allows you to help a friend find their iPhone, since it now cleverly combines the Find My iPhone and Find My Friends functions. While it is most commonly used to locate your own devices, you can also find someone else’s iPhone using this feature.

The iPhone Find My app is a great tool to find a misplaced, lost, or stolen iPhone.

With the Help a Friend feature, you can track and ping the lost device, as well as enable Lost Mode to protect your data until the lost iPhone is recovered.

Use the Help a Friend feature within the Find My app to help someone else locate their iPhone.

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