An initial 30 members of the exchange are participating in the program launched Tuesday. Under the scheme, stock orders made via mobile phones go to brokers' servers and from there relayed to the BSE.

The National Stock Exchange, a rival bourse, will also start mobile trading in early October.

Both bourses are offering the new service in partnership with local mobile phone operators and software firms, which will provide real-time data feed.

Aside from buying and selling shares, participating investors can view live index and stock prices. They will also get margin and net investment positions on their phones.

There are an estimated 10 to 20 million investors in India and the two bourses will try to tap the market via mobile phone securities trading.

Brokers in the country are already offering trading via the Internet.