GP1 and GP2 are the grace period 1 and grace period 2 provided by BSNL to their prepaid mobile customers. GP1 shall be 7 days from the date of expiry of the validity of the plan. During the GP1 period, customers will not enjoy any outgoing services unless they have not renewed the plan during the GP1 period. However, subscribers can receive incoming services during GP1 days. GP2 starts on the next day of GP1 and lasts 165 days. If the customer fails to renew their plan, the services of the SIM card will be stopped and the mobile number will be opened to any customer for the next assignment. During GP2 days, customers may not use either incoming or outgoing services, including voice, data, or SMS.