User Profile

Hi, I am wanting to create an app but am looking for a way to get raw IQ data from the cellular radio(s) on an iPhone. This would probably be gathered when cellular is turned off on the iPhone so as not to mess with its carrier services. Specifically, I would like to use the antenna(s)/radio(s) in an iPhone to get IQ data from a specified frequency and bandwidth. Is this possible? I haven't found anything in the developer documentation pointing to an API that would provide this. If it is a restricted API, are there steps I can go through to get access? Thanks