10 Important Takeaways From Apple's Record-Breaking Earnings Call

6. Solid App Store Revenue

CFO Luca Maestri said that Apple's record performance was driven by the "tremendous momentum of the App Store," as revenue grew 41 percent in the December quarter.

In addition, iOS developers have earned more than $25 billion from the App Store, and total sales of media and software from iTunes were $2.6 billion, high compared to the same quarterly results last year of $2.4 billion.

"App Store revenue was up a remarkable 41 percent. Demand was strong around the world. Flurry estimated that Apple products accounted for over half all mobile device activations globally from Dec. 19 to Dec. 25," said Cook.