Did someone take over your WhatsApp and start messaging your contacts?

If WhatsApp suddenly logs you out or friends say they are receiving strange requests from you, act quickly. The person using your account may be pretending to be you in private chats or groups.

The main recovery step is to register your number again using the six-digit code sent by WhatsApp. You need control of the same phone number, so contact your mobile network first if your SIM is lost or no longer works. Never give the code to anyone who calls or messages you.

Tell your contacts before you recover the account

Use a normal phone call, text message or another account to warn the people most likely to respond to you. Tell them not to send money, open unexpected links or share a code requested through your WhatsApp account.

If the account is used for business, warn colleagues and customers through a verified channel. Keep the message simple: your WhatsApp may be compromised, and payment requests should be confirmed by calling your known number. Avoid publishing private phone numbers or screenshots containing sensitive conversations.

This warning matters because recovering an account can take time, especially if your SIM is unavailable or a two-step verification PIN has been changed.

Get control of your phone number

WhatsApp’s recovery process depends on your existing number. If the SIM was stolen, damaged or unexpectedly lost service, contact your mobile network using its official support channel. Ask how to secure the line and obtain a replacement SIM with the same number.

Do not accept help from someone who says they can “unlock” the account for a fee and asks for the code sent to your number. That code can give another person access. A caller claiming to be from your network or WhatsApp should not need you to read it aloud.

If you recently changed numbers but never used WhatsApp’s change-number feature, recovery may be more complicated. Follow the official instructions and check with your network about access to the old number. WhatsApp says it is not possible to recover the account without a SIM for the same number.

Register the number again

Use a device you trust and the official WhatsApp app. If you are still signed in, do not remove the app or delete its data just because you suspect a problem. First check linked devices and your backup. If WhatsApp has logged you out, follow the prompts to log back in.

1. Open WhatsApp and tap Log back in or follow the registration screen.
2. Enter the full phone number, including the correct country code, when asked.
3. Request the verification code through an available method and wait for the SMS or call.
4. Enter the six-digit code in the official app. Do not share it with anyone.
5. Follow the remaining prompts, including a two-step verification PIN if requested.

According to WhatsApp’s recovery guidance, registering the account again with the six-digit code automatically logs out devices using the account. The app may sometimes verify a number automatically rather than asking you to type a code.

The title says “fast” because you should respond promptly, not because every account can be restored immediately. Network delays, a missing SIM or a PIN you do not know can make the process longer.

What if WhatsApp asks for an unfamiliar PIN?

A two-step verification PIN is different from the six-digit registration code sent by SMS. If you created a PIN, enter it when asked. If someone else set one or you cannot remember it, follow the recovery options shown in the app.

WhatsApp says that if you do not have the PIN, you may need to wait seven days and try again. It also says the other person is logged out after you enter the six-digit registration code, whether or not you know the PIN. Check the current prompts and official guidance for your situation.

Do not keep guessing a PIN or pay someone who claims they can bypass the wait. If you added a recovery email when setting up the PIN, use only the options WhatsApp provides and protect that email account as well.

Review linked devices after signing in

Once you are back in the account, open WhatsApp’s menu on Android or Settings on iPhone and look for Linked devices. Review the listed devices and log out any session you do not recognise. The screen may show the device type and recent activity, but details can differ by version.

If you use WhatsApp Web on a shared computer, log out when you finish. The guide to using WhatsApp on a computer covers linking and signing out. Never scan a QR code sent by someone who claims it will help you receive a prize or verify your account. A QR code may link your account to another device; read what the app says before approving it.

Check your profile name, photo, group activity and recent messages for changes you did not make. Tell affected contacts the account has been recovered, but continue to verify any payment conversations that happened during the incident.

Protect the account once access is restored

Open Settings, then Account, and look for Two-step verification. Turn it on and choose a PIN you can remember but others cannot easily guess. If WhatsApp offers a recovery email, use an address you control and keep that account secure.

A PIN and a registration code have different jobs. Neither should be sent to a person who contacts you unexpectedly. WhatsApp does not need a friend to collect your code for you, even if that friend says they entered your number by mistake.

Set a screen lock on your phone and review who can physically access it. Keep WhatsApp and your operating system updated through official channels. If you suspect a harmful app on the device, use a trusted device to secure linked accounts and seek help removing the app.

Will your old chats return?

Recovery of the account and restoration of chat history are separate. WhatsApp says past messages are stored on your device, and someone who registers your account on a new device cannot simply read your old conversations from WhatsApp’s servers. A suitable backup may help you restore your own history, but the result depends on the backup and account details.

Before reinstalling or restoring, check the backup date if you can. A restore can return chats to an older saved state. Our guide to recovering deleted WhatsApp messages on Android explains the precautions.

The safest order is to warn contacts, regain control of the number, register through the official app and then review linked devices and security settings. If your number is unavailable or the PIN requires a wait, follow the official recovery process rather than taking a risky shortcut.