What phone does Elon Musk use?

I'm curious to know, what kind of phone does Elon Musk, the visionary behind Tesla and SpaceX, use in his daily life? Does he opt for a cutting-edge smartphone that showcases the latest technological advancements, or does he perhaps favor a more modest device that aligns with his minimalistic approach? It's fascinating to ponder the technology choices of such a prominent figure in the tech and innovation space.