IOS Bluetooth device name not visible in the Iphone-->Settings --->Bluetooth

Hi

We are working in Blood pressure monitor project . we have implemented GATT protocol in our device to communicate with iphone / iPad . so far we are using Core bluetooth framework to communicate with our device ,Its working fine in data transmitting.

But our device is not visible / listing in iPhone Bluetooth in the settings page.

please note that we are not using any MFI chip.

Please advice what we needs to be done to make our device visible in iphone's bluetooth settings page without using MFI chip.