MOBILE NUMBER PORTABILITY RECENTLY STARTED IN INDIA. For porting your mobile number, first you’ve to get your unique porting code (UPC) from your existing service provider. For this you’ve to SMS PORT Your Mobile Number to 1900. Your existing operator will send you the 8 digit alpha-numeric UPC from the number 1901 as an SMS (the UPC will be valid only for 24 hours). BUT RELIANCE COMMUNICATIONS IS NOT SENDING UPC CODE. ALWAYS I GET THE MESSAGE PLEASE TRY AGAIN LATER. read full review »