WhatsApp has ended support for iOS 9 and earlier versions, which means the app will no longer work on the iPhone 4s.

A support document notes that WhatsApp now requires all users to be running at least iOS 10, which launched in 2016. This means that iOS users will need an iPhone 5 or later model to use the Facebook-owned messaging app.

WhatsApp drops support for iOS 9, now requires iPhone 5 or later model

The change comes with version 2.21.50 of WhatsApp for iPhone, which is now available to download from the App Store.

Here are the new requirements for the app:

Users who are using WhatsApp on an unsupported device are encouraged to export their chat history before losing access to the app.

Source: WhatsApp