Losing an iPhone, even for ten minutes, can bring on a small wave of panic. Where did you leave it? Is it still in the house, or did it slip out of a coat pocket on the bus?

Find My iPhone is the setting that turns that panic into a quick check on a map. It is built into every iPhone, it costs nothing, and once it is turned on you rarely think about it again, until the day you actually need it.

Plenty of people assume this is already switched on, and sometimes it is not, especially on an older iPhone, a hand-me-down phone set up by someone else, or one where an update reset a few settings along the way.

This guide walks through turning it on, using it from another device or a computer, and what the Lost Mode feature does if your phone goes missing for good. Set aside about two minutes for the setup itself.

How Do You Turn On Find My iPhone?

Open Settings, tap your name at the top, tap Find My, then tap Find My iPhone and turn it on. Here is the full walkthrough.

  1. Open the Settings app on your iPhone.
  2. Tap your name and photo at the very top of the screen.
  3. Tap Find My.
  4. Tap Find My iPhone.
  5. Turn on the switch next to Find My iPhone. It should turn green.
  6. While you are there, also turn on Find My network and Send Last Location.

That is the whole setup, according to Apple’s own support instructions for turning on Find My. If you set up your iPhone recently and signed in with your Apple ID, there is a good chance this is already turned on. It is still worth checking, since it is easy to accidentally switch off during setup or an app permission reset.

Plain talk: Find My network

Find My network lets nearby Apple devices, belonging to complete strangers, quietly help locate your lost iPhone without anyone’s privacy being affected. Apple describes the connection as encrypted and anonymous, so no one, including Apple, knows whose devices are involved.

Why You Should Turn It On Today

A missing iPhone is stressful enough without also wondering whether a stranger who finds it, or a thief who took it, can wipe it clean and resell it. Find My iPhone helps in three ways.

  • You can locate it. A map shows roughly where the iPhone is, updated as it moves.
  • You can lock or erase it remotely. If it will not turn up, you can protect your photos, messages, and banking apps from a distance.
  • It makes the iPhone far less valuable to a thief. Turning off Find My iPhone requires your Apple ID password, so a stolen iPhone stays locked to your account. This feature, called Activation Lock, is a major reason iPhone theft rates matter less to owners who had Find My turned on before the phone went missing.

Try this

Right after you turn on Find My iPhone, do a quick test. Ask a family member to open the Find My app on their own iPhone and see if yours shows up on the map. It only takes a minute and confirms everything is working before you actually need it.

Plain talk: Activation Lock

Activation Lock is what happens automatically once Find My iPhone is on. It ties your iPhone to your Apple ID so tightly that no one, not even Apple, can erase or reactivate it as a different device without your Apple ID password. It is the main reason a lost or stolen iPhone is hard for anyone else to resell.

Does Find My Work for AirPods, an Apple Watch, or a Mac Too?

Yes. The same Find My app and the same basic steps work across your other Apple devices, not just your iPhone. An Apple Watch and a Mac each have their own Find My toggle in their own Settings app, using the same Apple ID. AirPods do not have their own settings screen, but once they have been connected to your iPhone at least once, they show up automatically inside the Find My app under a separate Items tab.

It is worth spending the extra minute turning this on for an iPad or an Apple Watch too, especially if it is one that leaves the house on its own, such as a watch worn to the gym.

How to Use Find My From Another Device or iCloud.com

If your iPhone goes missing, you do not need your iPhone to find it. You have three options.

  1. Borrow another Apple device. Open the Find My app on a family member’s iPhone or iPad, sign in with your own Apple ID if asked, and select your device from the list.
  2. Ask a family member in your Family Sharing group. If you already share Family Sharing, your devices may already appear in each other’s Find My app without any extra sign-in.
  3. Use a web browser. Go to iCloud.com/find on any computer or phone, sign in with your Apple ID and password, and click Find My devices.

According to Apple’s support page on finding a lost iPhone or iPad, signing in at iCloud.com/find does not require a separate verification code, which means you can mark a device as lost even if the iPhone you would normally use to approve that code is the very one that is missing.

Once you find your device on the map, you have a few choices: play a sound to help find it nearby, get directions to its location, mark it as lost, or erase it completely as a last resort.

Option What it does When to use it
Play Sound Makes the iPhone ring loudly, even on silent It is nearby, likely at home
Mark As Lost Locks the screen and turns on Lost Mode It is missing or possibly stolen
Erase This Device Wipes all data permanently You are sure it will not be recovered

What Does Lost Mode Do?

Lost Mode locks your iPhone with your passcode, displays a custom message with a phone number on the lock screen, and suspends Apple Pay so no one can use your stored cards. You turn it on the same way you locate the device, through the Find My app or at iCloud.com/find, by selecting the missing iPhone and choosing Mark As Lost.

Once Lost Mode is on:

  • The screen shows a message you write, such as “This iPhone is lost. Please call [number].”
  • Apple Pay cards linked to that iPhone are suspended until you turn Lost Mode off again.
  • The iPhone keeps trying to report its location as soon as it gets a signal, even if it was offline when you turned Lost Mode on.
  • Notifications stay hidden on the lock screen, so no one browsing the phone can read your messages or emails.

Safety tip

If you believe your iPhone was stolen rather than simply lost, mark it as lost right away and consider reporting the theft to police with the device’s serial number, which Apple stores in your account under Settings, then General, then About. Do not try to meet a thief in person to get the phone back yourself.

Say this

If you are talking a parent through this over the phone, try: “Don’t worry about the phone itself right now. Let’s just get it locked first, then we can figure out where it is.”

Helping a Parent Turn On Find My

If you are setting this up for a parent or older relative, the good news is you only need to do it once, and then it works quietly in the background from then on. Walking someone through Settings over the phone can be fiddly, so our guide on how to help a parent with their iPhone remotely covers screen sharing tools that let you see exactly what they see while you talk them through each tap.

It is also worth turning on this feature as part of the very first setup on a new or hand-me-down phone. Our guide to setting up a phone for an elderly parent walks through Find My iPhone alongside a handful of other settings worth changing on day one, including Emergency SOS, which our article on what Emergency SOS does on iPhone explains in full.

If the person you are helping uses an Android phone instead, the same idea exists there too, just under a different name. Our guide on finding your parent’s lost Android phone covers Google’s equivalent, called Find My Device.

Where to go from here

Turning on Find My iPhone takes less than a minute and gives you a genuine safety net if the phone is ever lost or stolen: a way to locate it, lock it, or erase it, and a way to make it far less useful to a thief in the first place. If you have not checked yet, open Settings now and confirm it is on. For a full walkthrough of the key settings worth knowing on your iPhone, including privacy, backups, and security, see our book Your iPhone.