Apple iPhone 15 unveiling expected. Here's what to look for

Apple is expected to take the wraps off its next iPhone on Tuesday during what has become an annual late summer rite aimed at giving more people more reasons to buy the technology trendsetter’s marquee product.The showcase at Apple's Cupertino California, headquarters comes as the company is mired in a mild slump that has seen its sales drop from last year in three consecutive quarters — with management signaling another downturn is likely during the current quarter that wi