People with older smartphones should be warned that the app could stop working for them next year if they don't update their software.

That means they've only got two weeks left unless they want to start using the chatting platform on a compatible device.

According to News.18.com, certain older smartphone won't be able to use WhatsApp in 2021.

It said WhatsApp will stop working for people who are using an iPhone that hasn't been updated to iOS 9 software or higher.

Android users who don't have 4.0.3 operating systems or newer will also reportedly be affected.

f you have an iPhone 4 or older you won't be able to update to newer software.

Some Android devices like the Motorola Droid Razr and the Samsung Galaxy S2 also still run on outdated software.

If you have an old phone you may want to try upgrading to the newest software possible so you don't get caught out next year.

Part of the WhatsApp website reveals what operating systems it is compatible with.

Users who need to upgrade will be warned in the app itself.