Apple Inc. believed there was a “significant” risk it would fail to comply with a court order to allow mobile app developers to steer customers to payment methods outside the company’s App Store when it added a new commission for those purchases,

Longtime Apple executive Phil Schiller on Monday conceded he initially opposed fees that the iPhone maker charges for in app-transactions processed outside its own payment system because he feared violating a court-ordered mandate designed to create more competition.

Apple Fellow Phil Schiller, the executive in charge of leading the App Store, testified in court on Monday that he had originally raised concerns about