Apple (AAPL) stock fell just shy of 10% on Friday, after CEO Tim Cook warned about the impact of the global memory shortage on the company's business. And while Apple is able to offset some of that price jump, it won't be able to tackle it all. Apple's iPhone revenue hit $54.2 billion versus expectations of $53.5 billion. According to Jefferies analyst Edison Lee, the increases in memory prices could pressure Apple's iPhone margins going forward. But Brandon Nispel of KeyBank Capital Markets sees a potential iPhone price increase as a far larger issue for Apple than simply an impact on gross margins.