SWITCH TO BSNL BSNL New Prepaid Plans -  SWITCH TO BSNL Mobile Switch to BSNL and found the best and chief prepaid plans.. Here we gave s tep to port your Any other network number to BSNL 1. First of all, you need to obtain an Unique Porting Code (UPC). For getting UPC code you can sending an SMS to 1900 in the format 'Port Space 10 digit mobile number” (For example your mobile number is 78XXXXXX91, then you need to type - PORT 78XXXXXX91 and send it to 1900. 2.This UPC code will be valid for a period of fifteen days.The validity for the UPC in these areas are for a period of 30 days from request date. 3.When you receieve the UPC, you need to visit the BSNL Customer service center to reques for porting of your mobile number. submmite your application form with all documents like address proof,Adhaar card etc. 4. Once you submited all documents BSNL will issues a new SIM card for,when your exiting SIM gets deactivated then insert the new BSNL SIM ca...