Apple iPhone revenue, once unflappable, is officially in retreat with 15% shortfall

Apple's once-unflappable iPhone revenue is officially in retreat with a 15% shortfall year-over-year, according to its latest earnings statement today, so CEO Tim Cook explained what went wrong in a conference call.Here's what we know so far about this developing Apple story. The company's total revenue was $84.3 billion (about £67b, AU$120b) for the last three quarters ending on December 29. For almost any other company but Apple, this would be an impressive number.However, for Apple, thi