Among global companies,Canadian BlackBerry maker Research In Motion dropped 25 per cent,to post revenues of Rs 1,460 crore. At number four,Blackberry had a market share of 4.7 per cent on the back of entry level smart phones last year. Taiwanese handset maker HTC saw maximum growth 105 per cent — among all the brands surveyed. Its revenue more than doubled to Rs 923 crore,from Rs 450 crore,to garner a three per cent market share.