Mobile number portability helps the mobile telephone users to retain their same mobile telephone numbers when changing from one mobile network operator to another.
Mobile Number Portability India:
How To Change One Network Operator To Another:
The Customers who want to change their service provider without change of number just send an SMS from moblie phone to 1900.7 days will be taken for the change of new network service provider.
Your number will be automatically terminated by your current service provider and transferred to Other Telecom Service Provider as part of the mobile number portability request raised by you.