The document discusses regulations for full mobile number portability (MNP) in India. Key points: 1) The MNP 6th Amendment Regulations came into force in May 2015 and enabled inter-circle and inter-service area porting of mobile numbers, moving beyond just intra-circle MNP. 2) The regulations defined "MNP zone" and made other changes to facilitate full MNP across license areas. 3) A subscriber can now port their number to a new operator while their previous operator has 15 days to settle any outstanding bills before the number is disconnected.