Lock the phone and the account first, then look for it. For iPhone, sign in at iCloud.com/find (you do not need a verification code for Find Devices), mark the device as lost, and leave it in Find My so Activation Lock stays on. Lost Mode locks the phone with your passcode and suspends Apple Pay cards and passes. For Android, open Find Hub (android.com/find), mark the device as lost so it locks with the PIN, pattern, or password, and use the IMEI with your carrier. Then call the wireless carrier to suspend the SIM, change the Apple or Google password from another device, and review payment cards. Do not remove the iPhone from Find My. Do not share a passcode or a 2FA code with anyone who calls claiming they “found” the phone. This is not a Family Safety parental-controls task.

Lock the device before you hunt the coffee shop

A lock beats a map pin. If the phone is already in a stranger’s pocket, Lost Mode and a carrier SIM suspend matter more than walking the parking lot.

  1. Use another phone, tablet, or laptop you already trust. Do not wait to buy a replacement.
  2. Mark the missing phone as lost so the lock screen requires your passcode or PIN.
  3. Call the carrier from a number you know and ask them to suspend service on that SIM or eSIM so texts and banking codes stop landing on the lost handset.
  4. Change the Apple Account or Google Account password and review recovery email and phone numbers.
  5. Only then decide whether to play a sound, go look, file a police report, or erase.

Apple says it will never contact you to say the iPhone was found. Google will not call and ask for your password. Treat those calls as social engineering — see how to spot a phishing email.

iPhone: Find My, Lost Mode, Apple Pay, Apple ID

Apple’s lost-device page is the checklist. Stolen-device steps are the same lock, with a few extra “do nots.”

  1. Go to iCloud.com/find. If a verification-code prompt appears, choose Find Devices instead so you can still sign in without the missing iPhone.
  2. Select the missing iPhone or iPad under All Devices.
  3. Mark it as lost. That turns on Lost Mode: the device locks with your passcode, and Apple Pay cards and passes are suspended.
  4. If it was lost (not stolen), you may show a callback number on the lock screen. If it was stolen, Apple says do not leave your contact information — thieves use it for follow-up scams.
  5. Do not remove the device from Find My, even after a remote erase. Removing it removes Activation Lock and makes the phone easier to resell.
  6. If Find My was never on, you cannot mark it lost or erase it remotely. Change the Apple Account password immediately and review account.apple.com from another trusted device.
  7. Report it to local law enforcement and the wireless carrier. Ask the carrier to suspend the line. You can still look up the serial number without the phone.
  8. Remote erase only after you have tried to find it — erase cannot be undone. If you have AppleCare+ with Theft and Loss, do not remove the iPhone from Find My or your Apple Account until the claim is approved.

Review Sign-In & Security for unknown devices, recovery numbers, and a password change you did not make. Stolen Device Protection does not replace Lost Mode; Apple still wants the device marked lost quickly.

Android: Find Hub, lock, erase, IMEI

Google’s lost-device help is now Find Hub (the older “Find My Device” name still appears on some pages).

  1. On another Android device open the Find Hub app, or in a browser go to android.com/find and sign in with the Google Account that was on the phone.
  2. Select the missing device. You may be asked for that phone’s lock-screen PIN (Android 9+) or your Google password.
  3. Play a sound if you think it is nearby. Use last-known location if it is offline.
  4. Tap Mark as lost to lock it with the PIN, pattern, or password and to put a message and contact info on the lock screen if you want a finder to call you.
  5. Give the carrier the IMEI so they can disable the line. Find Hub can show the IMEI under the device’s settings.
  6. Factory-reset / erase only if you cannot get it back. After erase, location is no longer available in Find Hub, and you will need the Google password to use the phone again if it is found.
  7. Then open Google Account security (password, 2-Step Verification, recovery options, and apps with account access) from a computer or a new phone.

Mark as lost is the lock. Erase is the last resort. Do not confuse this with Family Link parental supervision.

Apple vs Google first-hour moves

Job Apple (iPhone / iPad) Google (Android)
Where you lock it iCloud.com/find or Find My on another Apple device android.com/find or the Find Hub app
What “lost” does Lost Mode + passcode lock; Apple Pay cards and passes suspended Locks with PIN/pattern/password; optional lock-screen message
Keep the device on the account Leave it in Find My so Activation Lock stays on You can erase later; location stops after a factory reset
Carrier Suspend the line; serial number available without the phone Suspend the line; give them the IMEI from Find Hub
If Find was never enabled You cannot mark lost or remote-erase; change the Apple Account password now You cannot secure or erase remotely unless Find Hub was on and the phone is signed in, powered, and online

SIM, payment cards, and passwords after the lock

The phone lock does not close every door. Banking apps, SMS codes, and stored cards still need a human call.

  1. Confirm the carrier suspended the SIM or eSIM so a thief cannot request password-reset texts.
  2. From a computer, change the Apple ID or Google password and sign out unknown devices.
  3. Open each bank, card, PayPal, Venmo, and store-wallet app you used on that phone. Turn cards off or ask for replacements if Wallet or Google Wallet was unlocked.
  4. If a card was already charged, treat it as card fraud: call the issuer first, then decide on a freeze — credit freeze vs identity monitoring.
  5. Expect “I found your iPhone, send this code” texts. Apple and Google will not ask you to read a code to a stranger. Delete them.

A later household privacy pass lives in home privacy checklist for US families. That is optional after the lock, not the first hour.

FAQ

How do I lock my iPhone if I lost it?

Sign in at iCloud.com/find, select the iPhone, and mark it as lost. That locks it with your passcode and suspends Apple Pay. Leave it in Find My.

How do I lock a lost Android phone and my Google account?

Use Find Hub at android.com/find, mark the device as lost, change the Google password on another device, and ask the carrier to disable the IMEI or SIM.

Should I erase the phone right away?

No. Apple and Google both treat erase as a last step because it cannot be undone. Lock first, suspend the SIM, then erase if you cannot recover the device.

Do I need new antivirus because my phone is missing?

No. Locking Apple ID and Google is an account-and-carrier job. A new Windows antivirus subscription will not lock the handset or suspend Apple Pay.

Buy-nothing is the right outcome. If a wallet app or card number may have been copied and you later want paid identity monitoring, the only on-site fit is Norton. TotalAV, Bitdefender, McAfee, and Avast do not lock Apple ID or Google.