One other reason that sales are down is that people are TIRED of paying $$$$$$$$$$ for a cell phone! The OEM's still do not understand that they can make MORE money by charging less per phone and selling more phones!
But NOOOOoooooo....they can't resist trying to fleece everyone for their last penny on every sale! Well, the law of averages is coming back around to bite them right in the A$$!
On top of that, for the last several years ALL cell phones, above maybe $150.00, have been more than capable of doing 99% of what 99% of users want/need. No need to buy a new expensive phone every year! SIMPLE!!!!