Key takeaways
- From another device, mark the phone as lost with Find My (Apple) or Find My Device (Google), and erase it if needed.
- Call your operator to block the SIM, and ask about blocking the phone by its IMEI.
- Secure your bank, email and messaging accounts: log out other devices and change passwords.
- Report the theft to the police with the IMEI; insurers and operators often require the report.
A stolen phone isn’t just an expensive object: it’s the key to your bank, your email, your photos and your messaging apps. Thieves often try to unlock it or use the SIM within hours. This checklist works in any country; local procedures for blocking a device vary, so ask your operator what applies.
1. Lock and locate the phone
Use a friend’s phone or a computer:
- iPhone: sign in at icloud.com/find, or use the Find My app on another Apple device, and turn on Mark As Lost. It locks the phone, shows a message with a contact number, and suspends Apple Pay.
- Android: go to android.com/find (Google Find My Device) and choose Secure device.
- If the phone appears somewhere, don’t go and get it yourself. Give the location to the police.
- If you can’t get it back, choose Erase once you’ve reported the theft. On recent phones, activation lock keeps protecting it even after erasure.
2. Block the SIM card
Call your mobile operator from another phone, or go to a shop, and ask them to suspend your line. This stops the thief from making calls or receiving your SMS verification codes. Ask for a replacement SIM with the same number. Ask too whether they can block the handset by its IMEI on their network: in many countries the operator or the police can blacklist a stolen phone. See /blog/how-to-find-your-imei-number/.
3. Protect your money and accounts
- Call your bank and block cards stored in mobile wallets if you think the phone could be unlocked.
- Change your main email password first: it’s used to reset everything else.
- In your Google or Apple account, remove the stolen phone from trusted devices.
- In WhatsApp and other messaging apps, log out the stolen phone. Re-registering your number on a new phone also logs it out.
- Warn your contacts that messages from your number asking for money aren’t from you.
Thieves sometimes send fake “your iPhone has been found” messages to steal your Apple or Google password. Never enter your password through a link received by SMS or email; go to the official site yourself.
4. Report the theft
Go to the police and file a report. Bring the IMEI, the phone’s make, model and colour, proof of purchase if you have it, and the circumstances (time, place, how it happened). Keep the report: insurers, operators and sometimes your bank will ask for it. Our guide /blog/how-to-file-a-police-report/ explains how to prepare.
5. Prepare now, before it happens
Write down your IMEI, turn on Find My or Find My Device, use a strong passcode and biometric lock, and enable two-step verification on your main accounts. With Chameleon AI, incidents you record are encrypted on your device, and with a recovery passphrase you can open them on a new device even if the old one is gone.
Frequently asked questions
Can the police track my phone?
Sometimes, depending on the country and the case. Give them the location shown by Find My or Find My Device and the IMEI. Never try to recover the phone yourself from a stranger.
Should I erase my phone right away?
If you have important data that isn’t backed up and there’s a chance of recovery, mark it as lost first. Erase it once recovery seems unlikely or if it holds sensitive data; activation lock still protects it after erasure on recent iPhones and Android phones.
Does phone insurance cover theft?
Only if your policy includes theft, often with conditions (theft with violence or break-in, not loss). You’ll usually need the police report and the IMEI.
General information to help you get organised, not legal advice. Procedures and numbers can change: confirm them with the office concerned, and in danger call your local emergency number first.
