UPDATE 4-U.S. said to investigate AT&T, Verizon over wireless collusion claim -source
April 20, 2018 at 18:45 PM EDT
WASHINGTON, April 20 (Reuters) - The U.S. has opened a probe into alleged coordination by AT&T Inc, Verizon Communications and a telecommunications standards organization to hinder consumers from easily switching wireless carriers, a person briefed on the matter said on Friday.