Dont bother. Even when works iPhone mirroring is unreliable and buggy experience, often asks to unlock iPhone again and sync gets broken at random and you have to go over enabling it again even though phone was next to the Mac mini all the time.

One of the worst supported features Apple has shipped. Idea was good though.

Seriously. I mainly want to use iPhone mirroring for when my iPhone isn't sitting right next to me. It then nearly always asks me to unlock my iPhone first before I can use it....