If you don’t believe that Apple’s revenue is becoming more skewed toward the iPhone, then the graph below will clear everything up. The fact is Apple’s iPhone has skyrocketed over the past few quarters, while the once-booming iPad has seen steady decline, said Jan Dawson, founder of Jackdaw Research.

Thanks to the larger iPhone 6 and 6 Plus, launched last September, Apple has continued to see strong sales for its smartphone, especially in China, where the 6 Plus’ 5.5-inch screen has proven very popular. That has resulted in Apple soaring past domestic Android vendors, such as Huawei and Xiaomi. During Apple’s second quarter, the 61.2 million iPhones sold by Apple accounted for 69.4 percent of the company’s revenue.

But when it comes to the iPad, the story has hardly changed: The tablet that once saw booming sales has continued to decline year after year, with its 12.6 million unit sales down 23 percent from the 16.4 million sold in the same period in the previous year. Part of this is due to cannibalization coming from the iPhone as well as the Mac, said Apple CEO Tim Cook during Apple’s earnings call earlier this week.

"We’re clearly seeing cannibalization from iPhone and on the other side, from the Mac," Cook said. "And of course, as I’ve said before, we’ve never worried about that. It is what it is. That will play out, and at some point, it will stabilize. I’m not sure precisely when, but I’m pretty confident that it will."

The other part is a problem the entire tablet industry has faced: Manufacturers still don’t know how long the tablet replacement cycle will be, as consumers are keeping their tablets for longer periods of time. As a result, market forecasts are expected to slow to single-digit growth in the years ahead, IDC said.