WhatsApp is about to stop functioning for millions of users this week, following the famous messaging app's decision to drop support in 2017 for a number of mobile platforms that are running old operating systems.

In the second quarter of 2016, particularly in the month of February, Facebook-owned service confirmed that it would end support on old operating systems such as Windows Phone 7, any device running Android 2.1 and Android 2.2, and iPhone 3GS/iOS 6 --- leaving millions of its users unable to send or receive messages, create GIFS, make VOIP phone calls or video chats with the app. On the other hand, BlackBerry OS, Nokia Symbian S60, Nokia S40, and BlackBerry 10 WhatsApp users still have until June 30, 2017 to enjoy the said functions above.

WhatsApp is a famous messaging app garnering over 1 billion users. It has decided to make this decision for the sake of building and deploying more advanced features that old operating systems can't support. According to WhatsApp's blog post last February, mobile devices with the mentioned old operating system have been part of their story but indeed they don't offer anymore the types of capabilities they need to expand their app's features in the future, according to CNBC.

The only way for users to be able to enjoy WhatsApp and its promised new features is by upgrading their devices to the newer versions of Android, Windows Phone, or iPhone just like what the company urges people to do. According to WhatsApp, they are putting security features as their priority for the said advancement that would indeed require a more advanced operating system. The app recently released a video calling feature and most likely to be rolling out more this 2017. There is no official date that has been set yet for the said switch-off but it seems that it started as of Monday, as some WhatsApp users already found that their WhatsApp aren't working anymore.