No, Apple, among other things, has violated the laws against anticompetitive behavior by attempting to exert its market dominance in one market (iPhones) over a separate market (app stores) by engaging in punitive and market-distortive actions against potential competitors.

Similar antitrust violations of the same nature: iMusic vs Spotify, iChat vs Hey/other chat programs, Apple Webkit vs all other browsers.

I would have included Apple Pay but in that instance Apple lost, largely because their actions in other markets made it extremely undesirable for merchants and payment processors to get behind Apple's vision of Apple Pay in which Apple skimmed X% for providing absolutely no value to the transaction. In fact, so many retailers found Apple to be an undesirable partner that a number of major retailers disabled Apple Pay integration on their NFC-capable payment terminals. For example, most Kroger locations (like Ralphs) take Google Pay, Samsung Pay, Garmin Pay, and most other app-based NFC payment methods...but not Apple Pay. (Apple's situation is similar to American Express, which also charges significantly higher rates to retailers than its competitors, but unlike Apple, Amex actually processes transactions and theoretically provides valule to retailers, just not enough to justify its Appleesque rates.)