Bluetooth rfcomm programming on iOS

Hi,

I have the need to develop an app that open a RFCOMM socket with a device bluettoth outside, to send and receive text from a iPhon or iPad. About this I have several questions:

1) Can I receive and send text data with a socket RFCOMM from an iPhone or iPad?

2) Is there a Sample code (Xcode project) for iOs?

3) This example and libraries are part of the program MFi?

Kind regards.