"Specifically, investigators have examined how the Apple Watch works better with the #iPhone than with other brands, as well as how Apple locks competitors out of its #iMessage service. They have also scrutinized Apple’s payments system for the iPhone (Apple Pay), which blocks other financial firms from offering similar services, these people said."
Surely the Beeper Mini news over the past few weeks put this #antitrust investigation over the line and they're now apparently ready to strike.