Business Insider executive editor Sara Silverstein talks about the iPhone X, the release of which many people thought would trigger a so-called upgrade supercycle. She breaks down a recent UBS report arguing that this isn't true, citing data showing that iPhone sales will remain flat from a year ago. UBS says that people are still most concerned about price and battery life, not the newly announced functions that Apple has been advertising so heavily. UBS still has a buy rating on the stock, despite the firm's reservations over the upgrade cycle.