You add a phone to Find My iPhone through the iCloud settings on that device, then sign in with the same Apple ID you use on your main phone

Find My iPhone works by linking devices to your Apple ID. When you add a new phone, you're telling Apple's servers that this device belongs to you and should appear on your Find My map alongside your other devices. The phone you're adding needs to be turned on, connected to Wi-Fi or cellular data, and you need to know your Apple ID password.

The process takes about five minutes. You'll do it on the phone itself, not on another device. Once it's set up, that phone will show up in the Find My app on any of your other devices, and you can locate it, play a sound on it, or remotely lock it if it's lost.

Key Takeaways

  • You set up Find My iPhone on the phone you want to add, using Settings > [Your Name] > iCloud > Find My iPhone, then toggle it on.
  • The phone must be signed into an Apple ID — either your own or a family member's — and that Apple ID is what determines whose Find My map it appears on.
  • If you're adding a family member's phone, they can set it up themselves, or you can set it up during initial phone setup if you have their Apple ID password.
  • Once enabled, the phone will appear in the Find My app on any device signed into that same Apple ID within a few minutes.

Setting up Find My iPhone on a new device

Open Settings on the phone you want to add. Tap your name at the top of the screen, then tap iCloud. Scroll down and look for Find My iPhone — it will show a toggle switch next to it. Tap the toggle to turn it on. You'll see a prompt asking you to confirm; tap Allow.

The phone needs to stay connected to Wi-Fi or cellular data for the next minute or two while it registers with Apple's servers. You don't need to do anything else — just wait. Once the toggle stays on without switching back off, the setup is complete.

If you don't see Find My iPhone in your iCloud settings, make sure you're signed into an Apple ID. If the toggle is grayed out, the phone may not have a strong enough internet connection, or Find My may be restricted by Screen Time settings on that device.

What happens if you're adding a family member's phone

If the phone belongs to someone else — a child, spouse, or parent — they can set up Find My iPhone on their own device using the steps above. They'll use their own Apple ID, and the phone will then appear on their Find My map, not yours.

If you want to see their location through Family Sharing, that's a separate setup. You'll need to set up Family Sharing first through Settings > [Your Name] > Family Sharing, then add that person to your family group. Once they're in the group and have Find My iPhone turned on, their location will appear on your Find My map under a "People" tab.

During initial phone setup — when someone is turning on a new iPhone for the first time — you can set up Find My iPhone for them if you have their Apple ID password. The option appears on the setup screen labeled "Find My iPhone." If you miss it during setup, they can always turn it on later themselves.

Checking that the phone appears on your Find My map

Open the Find My app on any device signed into the same Apple ID. You should see the newly added phone listed under "Devices" at the bottom of the screen. If it doesn't appear right away, wait a few minutes and refresh the app by pulling down on the screen.

Tap the device name to see its location on the map. If the location shows as "Locating" or doesn't update, check that the phone has an active internet connection. Find My needs either Wi-Fi or cellular data to send location information to Apple's servers.

If the phone still doesn't appear after 10 minutes, sign out of iCloud on that phone and sign back in. Go to Settings > [Your Name] > Sign Out, enter your Apple ID password, then sign back in and turn on Find My iPhone again.

Troubleshooting when a phone won't show up

The most common reason a phone doesn't appear is that it's signed into a different Apple ID than the one you're checking. Verify that both the phone and the device you're using to view Find My are signed into the same Apple ID. You can check this in Settings > [Your Name] at the top of the screen.

If the phone is signed into a different Apple ID intentionally — for example, a family member's account — you won't see it on your Find My map unless you've set up Family Sharing. That person's phone will only appear on their own Find My map.

Location Services also needs to be turned on for Find My to work. Go to Settings > Privacy & Security > Location Services and make sure the toggle is on. Then scroll down, find Find My, and make sure it's set to "Always" or "While Using the App."

What you can do once a phone is added

Once the phone appears on your Find My map, you can locate it in real time, see its battery level, and play a sound on it to help find it if it's nearby. Tap the device name on the map to see these options.

If the phone is lost or stolen, you can use Find My to remotely lock it or erase it. Tap the device, then tap "Mark as Lost" to lock it and display a custom message on the screen, or tap "Erase This Device" to wipe it completely. These actions work even if the phone is turned off, as long as it connects to the internet at some point.

You can also see the phone's location history — the last place it was seen — even after it's been turned off or the battery dies. This information stays available for up to 24 hours.

Removing a phone from Find My iPhone

If you want to remove a phone from Find My, you can do it from the phone itself or from another device. On the phone, go to Settings > [Your Name] > iCloud > Find My iPhone and toggle it off. You'll need to enter your Apple ID password to confirm.

To remove it from another device, open Find My, tap Devices, select the phone you want to remove, scroll down, and tap "Remove This Device." Again, you'll need your Apple ID password.

Once removed, the phone will no longer appear on your Find My map and you won't be able to locate it remotely. You can always turn Find My iPhone back on later if you change your mind.

Frequently Asked Questions

Can I add a phone that's turned off?

No, the phone needs to be powered on and connected to the internet to register with Find My. Once it's set up and turned off later, it will still appear on your map showing the last location where it was connected, but you can't add it while it's off.

Do I need a cellular plan for Find My to work?

No. The phone can use Wi-Fi alone. Find My needs an internet connection to send location data, but it doesn't matter whether that connection is Wi-Fi or cellular data.

What if I forget my Apple ID password?

You won't be able to turn on Find My iPhone without it. Go to iforgot.apple.com to reset your password, or use another Apple device to reset it through Settings > [Your Name] > Password & Security > Change Password.

Will the other person know I'm tracking their phone?

If you're using Family Sharing, yes — family members can see that they're part of a family group and can view each other's locations. If you're just adding your own phone, only you can see it. There's no hidden tracking option in Find My.

Can I add a phone that belongs to someone else without their knowledge?

Not through Find My iPhone itself — you'd need their Apple ID password and access to their phone. If you're trying to track someone without their consent, that's not what Find My is designed for. Family Sharing is the intended way to share location with family members, and it requires their participation in setup.