WhatsApp is without any doubts one of the most used mobile messaging applications out there. The application has over 1 billion monthly active users from all over the world and 95 percent of the smartphone users have installed it in India. Unfortunately, if you own an “old” device, then we have some bad news for you, as the WhatsApp will stop functioning on many old smart phones. The developers of this application have already announced that they will stop supporting a good amount of handsets before the end of 2016. According to reports, WhatsApp will no longer support Blackberry OS, Nokia S40 and Symbian OS before the end of 2016. In other words, if you have smart phones that run on any of these three operating systems, you should already consider purchasing a new handset (that’s if you want to keep using WhatsApp). In addition, older devices that run on outdated Android, Windows and iOS versions will be in the same situations as the ones that run on Blackberry OS, Nokia S...