Mobile Users cross a Billion

India's cellphone subscriber base has peaked to more than one billion users (100 crore) for the first time, data released by telecom regulator Trai on Wednesday showed.India is the second country , after China, to achieve the milestone. The number of wireless subscribers rose to over a billion at the end of October from 996.7 million at September-end, the data showed. India has around 12 mobile carriers; the largest, Bharti Airtel, has over 200 million users. The biggest American carrier, Verizon Wireless, has around 137.5 million subscribers.