AT&T, Verizon Said to Face U.S. Probe Over Mobile Technology

AT&T Inc. and Verizon Communications Inc. are under investigation by U.S. antitrust officials over whether the companies colluded to make it tougher for consumers to switch wireless carriers. Apple Inc., a pioneer in the eSIM technology that makes switching easier, was joined by other equipment makers in complaining to the government about the carriers’ practices.