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I'm aware that I don't need a SIM card to continue using my WhatsApp account after the initial activation.

But say, hypothetically, I went into a pool with my phone inside my pocket and my SIM stopped working as a consequence, and I don't want to buy a new since I never use mobile data.

When the carrier inevitably cancels my number and sells it to another person, and said person activates his WhatsApp account with that number, will I still be able to send and receive messages on my account?

  • You'll most likely have a request to update your form of ( 2FA - Two Factor Authentication ) either by providing a new number or new email address. I had a problem like this with Facebook and it's mobile verification logon. I wrote to them and explained that loosing my sim card locks my account and their security team quickly fixed this issue by giving an option to select other friends to recover my account. Most social networks DO NOT want you to make multiple accounts, and this issue only encourages that. Its a 2FA Problem globally – Gadget Guru Mar 3 '18 at 7:29
  • You can also use two step verification to stop others from using your WhatsApp number. – aBochur Mar 4 '18 at 6:43
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Simple answer No you can't use that account anymore

Reason being that WhatsApp is linked to your number. If the carrier sells that number and new owner activates WhatsApp , they will be prompted to authenticate and a new account is created for them. If they don't install WhatsApp you are good to go to the next time Whatsapp asks for authentication

Actions to be taken for change of number before changing number are mentioned in WhatsApp FAQ

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