Mobile number portability (MNP) found
59.31 million takers till end-July, with Karnataka receiving the maximum number of requests to port numbers - at 7.2 million.
The state was followed by Andhra Pradesh and Rajasthan where 5.7 million and 5.6 million subscribers opted for the service.
India currently has almost 914 million mobile phone subscribers.
"By the end of July 2012, about 59.31 million subscribers have submitted their
requests to different service providers for porting their mobile number," the Telecom Regulatory Authority of India (Trai) said in a statement.
MNP allows users to switch operators while retaining their mobile numbers. It was implemented across the country last January while the pilot launch of the service took place in Haryana November 25, 2010.
To opt for MNP, a
customer has to pay a maximum of Rs 19 to the new operator for 'porting' the number and remain with the new operator for at least three months.
The customer has to send an SMS from the existing phone to 1900. A unique porting code is sent by the existing provider. An application then has to be filed with the new service provider mentioning the code for transferring the connection.
With inputs from IANS 
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