By the end of the week and before the start of the April, Facebook is ending support for some smartphones for its Messenger app.

If you own a device that runs on Windows 8.1, or a previous version, the app will stop working – starting from Saturday.

In order to continue using the service, users are asked to update the operating system to Windows 10, and then update to the latest version of Facebook Messenger.

Facebook notified users of the upcoming change via an email.

“Thank you for choosing to use Messenger,” the social media website said.

“We regret to inform you that since the end of March, the app version you’re using is no longer supported and you can no send and receive messages.”

‘To continue to send and receive messages from Facebook on your phone, update your Facebook app to the latest version.’

Share your Real-time Location using Facebook Messenger

Earlier this year, WhatsApp and Skype also ended their support for older versions of Windows Phone.

People using an iPhone or a recent version of Android will not be affected.