How to avail MNP

Here are the steps to port your mobile number to another service provider.
1. First, you need to generate UPC (Unique Porting Code).
This can be done by sending an SMS to 1900.
The SMS should be in this format: PORT Eg: PORT <99XXXXXXXX>.
This should be sent to 1900
Operator SMS charge will be applicable.

PM to flag off nationwide roll-out of MNP on Jan 20

2. In reply, you will receive a UPC (Unique Porting Code) as SMS from 1901.
The UPC will be an 8 digit alpha-numeric code. You will also receive the date till when the UPC will remain valid in the MM/DD/YYYY format.
3. Send the UPC to the service number of the mobile operator you wish to switch to, through an SMS, if such a number is available.
You can confirm by visiting the operator's website. Else, visit the nearest outlet/showroom of the operator you want to migrate to with your UPC in hand.
4. Some service providers charge a nominal fee for the process, while others like BSNL have advertised free porting.
5. You will also have to fill and submit the prescribed Mobile Number Portability form to the new operator. They could also ask you to submit documents (like photo ID and address proof). Post-paid subscribers will be asked to submit a copy of their latest bill too.
6. Your request could be denied if any of these factors apply:

• You have an unpaid bill on your existing postpaid mobile number.
• Pending request for change of ownership of the concerned Mobile Number
• The mobile number is under contractual obligation
• 90 Days has not lapsed since number activation
• 90 Days has not lapsed since last Porting Request from the same Mobile Number
• You have applied for inter-circle porting
• There is a pending legal case against your mobile number

7. The number portability has to be completed within 7 working days as per process mandated by DoT. You will also receive an SMS mentioning the time and date for porting.
8. Once the switch is complete, you will receive another SMS from the new operator.
Your mobile phone may go 'dead' for 120 minutes, the time when the porting takes place. At the end of it, your migration to your new operator should be complete.
9. One thing you must keep in mind - You can change your operator only once in every 90 days. So, use the service with care.source