Mobile number portability MNP in India: How to change mobile operator keeping existing number

MNP (mobile number portability) was recently launched in INDIA. MNP is not a new thing for telecom world. MNP allows a user to change there mobile operator without changing there mobile number. Here is a complete step by step guide on Mobile number portability(MNP) in INDIA.First lets see few main points about MNP -1. MNP allows a user to change his/her telecom operator without changing the