The company is also abandoning all phones running BlackBerry OS, BlackBerry 10, and Window Phone 8.0 on December 31, 2017.
WhatsApp will still work on those systems, but it's unclear how long the app will be fully functional.The FAQ page does warn users that some WhatsApp features may stop working on these unsupported platforms because the company is no longer actively developing for those OSes.
"While these mobile devices have been an important part of our story, they don't offer the kind of capabilities we need to expand our app's features in the future", the company's blog post said.
Last year, the company axed support for a host of other mobile systems, such as Nokia Symbian S60, Android 2.1 and 2.2, and iPhone 3GS/iOS 6.
Users of Nokia's S40 mobile operating system can continue to use WhatsApp until the end of 2018, and users of older phones running Android 2.3.7 down to Android 2.3.3 until February 1, 2020.More news: Treasury escalates pressure on North Korea with more sanctions
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WhatsApp is quite remarkable in its support for older platforms and devices.
This includes Android running OS 4.0 or above, iPhone running iOS 7 or above, or Windows Phone 8.1 or above. Then be prepared to switch to Android or iOS in 2018.
WhatsApp is said to be taking these measures to prioritize the allocation of its resources to newer platforms.
The messaging app, which launched in 2009, has more than one billion users.
There still are quite a few Windows Phone 8.0 users, though, refusing to give up the sturdy Nokia hardware and Windows OS. If WhatsApp is your go to messaging app, you might want to consider a new device. "Keep in mind that WhatsApp can only be activated with one phone number on one device at a time".
After extending its deadline for ending BlackBerry 10 support, WhatsApp is clearly done with the OS once and for all.