New Delhi: Finnish mobile handset maker Nokia continues to maintain its leadership with highest revenues of Rs 12,929 crore during 2010-11 in the handset market but has registered a meagre 0.2 per cent growth over the previous year, says a survey. Revenues of the Indian mobile handset market grew by 15 per cent to touch Rs 33,171 crore in 2010-11 from Rs 28,897 crore a year back, according to annual survey by media firm Voice&Data. The survey included all mobile handset companies doing business in India across categories like feature phones, multimedia phones, enterprise phones and smartphones from both multi-national and Indian mobile phone firms Read Full : Nokia remains top earning handset maker