Give it some time. It sounds like you have the perfect background. A mentor told us yesterday that the iOS support teams are manned but CPU still needs a lot of agents.
Thanks.
You just reminded me of something. From the very beginning, I was told I'd be considered for the CPU side. Towards the end of my third interview (during which, oddly enough, I wasn't given the opportunity to demonstrate my tech or empathy skills), I was asked about my familiarity with iOS.