According to the media reports, Whatsapp will stop working on millions of smartphones by the end of 2016 unless they are upgraded.
"WhatsApp, with more than one billion monthly users, was phasing out compatibility with older phones in a technology upgrade," as per a report published in The Mirror.
This announcement comes after a warning earlier this year that the Facebook-owned company would be pulling support for older models, and that the deadline to upgrade was fast approaching.
The spokesperson of WhatsApp recent blog post reads, "While these mobile devices have been an important part of our story, they do not offer the kind of capabilities we need to expand our app's features in the future."
The several older services would scrapped in the coming year.
"As we look ahead to our next seven years, we want to focus our efforts on the mobile platforms the vast majority of people use," the spokesperson added.
If you are an avid whatsapp user and from long time you have not upgraded your phone, beware from next year you will not be able to use it further.
The blog listed several mobile platforms that will not be able to support the messaging app, including Android 2.1 and Android 2.2, Windows Phone 7 and iPhone 3GS or iOS 6.
According to the report, any iPhone 4, 4S, or 5 that has not been updated to the newest version of the operating system iOS 10 -- would also not support WhatsApp.
However, the popular messaging app is extending support for BlackBerry OS, BlackBerry 10, Nokia S40 and Nokia Symbian S60 until June 30, 2017.
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