First, breathe
Losing a phone feels urgent, and that urgency is what makes mistakes likely. A short sequence of steps will protect most of what matters. Work through them in order, and do not rush into anything that is hard to undo, such as erasing the phone, before you have thought about whether it may simply be nearby.
Step 1: Try to find it
Start with the simple options. Call the number or ask someone to ring it. Retrace your steps and check with the place you were last, since lost phones are often handed in at a front desk.
Then use the find-my-device service from your phone maker, which you can reach from another phone or a computer by signing in to your account. It can usually show the last known location on a map, play a loud sound, and offer lock and erase options. This only works if the feature was turned on beforehand and the phone has a connection, so it is worth checking now, while your phone is safe, that it is enabled.
If the map shows a location that is not somewhere you left it, be careful. Do not try to confront anyone or retrieve a stolen phone yourself. If you believe it was stolen, contact the local police or the venue’s security and let them handle it.
Step 2: Lock it and display a message
If you cannot find it quickly, put it into a lost mode through the find-my-device service. This locks the screen, and many services let you show a message with a phone number where you can be reached. Avoid putting a home address or sensitive details in the message. A kind finder can then contact you, and anyone else is still blocked by the lock.
Lock mode also helps when your screen lock is weak. If you are worried about your passcode, a strong one set before the incident does most of the work, which is why a longer code is a recommended habit.
Step 3: Contact your mobile carrier
Call your carrier or use its official website to report the phone lost or stolen. They can suspend service, which prevents calls, texts and data use on your account. They may also be able to block the phone’s unique device identifier so it cannot be used on the network, depending on your country and carrier. Ask about this and about replacing your SIM so your number can be moved to a new phone.
Suspending service also helps protect text-message codes, which is a good reason to act promptly.
Step 4: Secure your accounts
This is the step that protects you most. Start with the accounts that matter most.
- Email. Change the password, and sign out of the lost phone if the service lists signed-in devices. Email is how other accounts get reset.
- Your phone maker account. Check that its password is strong and that two-step verification is on, since it controls the find, lock and erase tools.
- Banking and payment apps. Change passwords and contact your bank if you have any concerns. You can also freeze or replace cards stored in digital wallets and ask your bank what protections apply.
- Messaging and social media. Change the passwords and sign out of the lost device.
- Your password manager and authenticator. If these are on the missing phone, make sure their accounts are protected, and use your backup codes to regain access where you need to.
The order matters. Doing the email first prevents someone from using it to reset other accounts. If the phone was unlocked when it was lost, follow the steps in our guide to recovering a hacked app account if you notice anything suspicious.
Step 5: Decide about erasing
Remote erase removes your data from the phone the next time it connects. It is the right choice if you are fairly sure the phone is gone for good, or if it holds very sensitive information. The trade-off is that you will likely lose the ability to track it afterward, and that if the phone turns up, the data will be gone and has to come from a backup.
Some people wait a day or two if the phone is probably misplaced at home or in a familiar place, while locking it in the meantime. That decision depends on how sensitive your data is. If you are unsure, locking now and erasing later is usually a reasonable middle path.
Step 6: Report and replace
If the phone was stolen, a police report may be needed for insurance or carrier claims. Keep the report number. If you have insurance or a warranty, ask about claims. Note the phone’s serial number or identifier if you have it recorded from the box or receipt, because services may ask for it.
When you get a replacement, restore from your latest backup. This is where having backed up regularly pays off, and a tested backup makes the process much smoother. Sign in again to your accounts, re-enable two-step verification, and remove the old phone from the list of trusted devices.
Prepare before it happens
- Turn on the find-my-device feature.
- Use a long screen lock and hide message previews on the lock screen.
- Keep backups running.
- Store backup codes for your accounts away from the phone.
- Keep a note of your carrier’s contact details somewhere other than the phone.
Outcomes vary, and not every phone comes back. But with a lock, a backup and a clear order of steps, a lost phone becomes a problem you can manage.