Finally, the Full Mobile Number Portability, which is also called as National Mobile Number Portability is going to become operational from 3rd July, 2015. Shri Rakesh Garg, Secretary, DoT has announced this. National Mobile Number Portability allows a customer to retain his mobile number, even if he shifts from one state to another. The Cellular Operators Association of India (COAI ), a body of the private GSM operators, has also stated that they were ready to roll out National MNP from 3rd July, and that they had not applied for further extension of time.