WhatsApp won't work on these devices from 2019
WhatsApp announced to cut its services and supports for dated mobiles and operating system due to the difficulty to provide continues security updates and maintenance issue. According to this announcement, two main operating systems iOS and Android facing difficulty to support its older devices.
Operating System like iOS7 and older versions, Nokia 40 Series phones, and Android 2.3.7 are going to drop the WhatsApp service from earlier months of 2019. So, users of iOS 7, Nokia Series 40 and Nokia Series 40 won't be able to create WhatsApp account in their mobile.
WhatsApp Service dropping dates:
Nokia S40 series mobiles: 31.12. 2018
Android versions 2.3.7 OS: 01.02.2020
iOS OS: : 01.02.2020
The Facebook-acquired WhatsApp announced that it would stop investing to develop the app for these phones, in a blog post on December 30. "When we started WhatsApp in 2009, people's use of mobile devices looked very different from today. The Apple App Store was only a few months old. About 70 percent of smartphones sold at the time had operating systems offered by BlackBerry and Nokia."
The Nokia S40 Mobiles:
Nokia Asha 201
Nokia Asha 205
Nokia Asha 210
Nokia Asha 230
Nokia Asha 500
Nokia Asha 501
Nokia Asha 502
Nokia Asha 503
WhatsApp will stop the service to above-mentioned devices at any time in the first week of January 2019.