WhatsApp ends support for old Nokia phones running on S40
WhatsApp has stopped working for devices on Android 2.3, iOS 6, Symbian S60 and more-Tech News , Firstpost
WhatsApp is going to stop working on certain phones soon - here's when and what you need to do - Mirror Online
Old Nokia Phones, Series40, Java Games and sound issues
WhatsApp - Back-up chats, photos, transfer contacts to new phone
WhatsApp drops support for Windows Phone 7 today - MSPoweruser
WhatsApp support for s40 Nokia phones ends with 2018
WhatsApp Ending Support For Older Versions Of Android, Windows Phone, Nokia, And Blackberry
WhatsApp stops working on these phones today