Tim Cook suggests iPhone upgrade plans are akin to the idea of a "prime subscription", says Apple sees it as a major growth area (Kif Leswing/CNBC)

Kif Leswing / CNBC:
Tim Cook suggests iPhone upgrade plans are akin to the idea of a “prime subscription”, says Apple sees it as a major growth area  —  - Some investors want Apple to sell its iPhone on a subscription basis to shift more of Apple's revenue from transactional sales to recurring revenue.