The wide variety of colour options no doubt helped the sales. It's the cheapest BlackBerry around, and the go-to option for the young crowd who use BlackBerry Messenger as if their life depended on it. The reasons why Curve 8520 proved to be such a big hit are easy to understand. Launched way back in 2009, 8520 was the first Curve smartphone from the Canadian handset maker and it continues to be their bestselling smartphone in the country. Fortunately for the company, India is one of the few markets in which it is still popular amongst youngsters, thanks largely to the BlackBerry Curve 8520.
In the wake of increasing popularity of Android phone and Apple's iPhone, Research In Motion (RIM) has not been having a good run with its BlackBerry devices.