One of the most popular messengers in the world will soon stop supporting some of the phones’ and OS’ – mostly the old ones. After 31st December, WhatsApp will not support phones with BlackBerry OS, BlackBerry 10 and Windows Phone 8. In two years, WhatsApp is also supposed to stop supporting Android OS’ older than 4.0. The official reason for such action is that WhatsApp wants to keep improving their software and having to keep it available for old software is holding the whole program back.