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.

Google went to appeals court Monday in an attempt to convince a three-judge panel to overturn a jury’s verdict declaring its app store for Android smartphones as an illegal monopoly and block the penalties imposed by a federal judge to stop the misbehavior.