Apple just released its Q3 2016 financials, and the data shows device sales across all three of Apple's main product categories falling over the past year. iPhone sales saw the steepest decline year over year (though the release of the iPhone SE in March saw sales jump significantly in the second quarter). Overall, iPhone growth has stalled, though it's certainly possible things will pick up when the iPhone 7 is released later this year.
The iPad was the only product category that saw a decline from 2014 on, though that's no surprise. However, Apple still hasn't released data on the Apple Watch or Apple TV, two devices bundled under the "Other products" umbrella that will become increasingly important in years ahead.