In a massive overhaul of its messaging service, the company owned by Facebook will stop working soon for older smartphones.
This means that people on certain devices will no longer be able to access the popular service.
In other words, the company is abandoning those who can not afford to update their smartphones.
WhatsApp currently has more than 1.5 billion monthly active users.
The company quietly announced the change in a blog post that said: "If you are currently using an earlier operating system, we recommend that you upgrade to a newer version."
As of December, the Nokia S40 will no longer support WhatsApp messaging.
Android 2.3.3 or earlier, Apple iOS 6 or earlier, such as iPhone 3GS, Windows Phone 8.0 and earlier versions, Nokia Symbian S60, BlackBerry OS and BlackBerry 10 will be lost in the service.
WhatsApp will no longer be compatible with Apple iPhones with iOS 7 and earlier versions of Android 2.3.7 and earlier since February 1, 2020, reports Express.co.uk.
The current recommendation of the company is that everyone has at least Android OS 4.0 or later, iOS 8 or later and Windows Phone 8.1 or later.
Facebook paid more than £ 14 billion to acquire WhatsApp and has yet to monetize the messaging platform.
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The launch of WhatsApp for Business shows that Facebook takes the task of making money with the platform seriously, the report adds.
This occurs when WhatsApp confirmed that it will bring its long-awaited wireless money transfer functionality in a new update earlier this year.
The application has already followed the function in a beta version, where the new point-to-point payment system was extended to around one million WhatsApp users.
Having proven successful in the test, the new system will now open the way for all users.
The feature will be incredibly useful for those who need to transfer money quickly between close friends: you can simply transfer funds directly from your account, which will be linked to the application.
WhatsApp has started to launch a limited service for wireless transfers in India, where it currently has more than 200 million users.
You can expect to launch the feature to the rest of the world soon enough.