Bluetooth le connection


I have been trying to connect with Bluetooth LE IOS terminal in the iphone with the RedBearLab nRF51822 and i was not able to see the chipset being listed in the bluetooth devices list.
So, I kindly ask you people to tell me a way to connect to that chipset that i have mentioned above. It would be greatful that if i get the help ASAP.
Thank you !