The insured applies to renew his plan within 2 years from the date of first unpaid premium due date. (policybazaar.com)
The policy can also be revived within 2 years from the due date of first unpaid premium by paying all due but unpaid premiums with applicable interest. (myinsuranceclub.com)
Policy will lapse if premium not paid within grace period, though it can be revived but within 2 years of First unpaid premium. (myinvestmentideas.com)