As part of their new Inner Circle service plan, the British-based MVNO will only sell iPhones. New customers can sign up and get unlimited talk, text, and data for an entire year for only $1.
https://www.notebookcheck.net/Virgin-Mobile-goes-iPhone-only-and-offers-a-year-of-unlimited-talk-text-and-data-for-1.229902.0.html