WhatsApp will stop working for a number of users from today, the Facebook-owned messenger has confirmed.
The hugely-successful chat app will today drop support for BlackBerry OS, BlackBerry 10, Windows Phone 8.0 and older versions.
WhatsApp had originally told users that support for these ageing mobile platforms would be dropped by the end of 2016.
But as the end of 2016 drew close, WhatsApp updated the information listed on its website, informing users that the deadline had been pushed back to June 30, 2017.
A further update extended the deadline again until December 31st 2017.
WhatsApp has clarified that Nokia S40 will no longer work after December 31st 2018.