The victim will receive a message telling them that their current subscription has expired, and that they need to follow a link to purchase lifetime access for 99p.
Despite the amount appearing small, it's actually a clever way of obtaining your bank details.
The link directs to a fake page managed by the scammers.
In the past, Whatsapp did charge users 99p per year, but it has been a free service since 2016 and has not returned to a subscription model.
If you receive the message, delete it immediately, and ensure your anti-virus software is updated.
There have been Whatsapp scams before, including one where Android handset users were tricked into downloading a fake upgrade called Whatsapp Gold which infected their devices with malware.
Other scams have been based around fake discount vouchers to use at retail stores.