Cable Questions in T-Mobile Merger • Amazon’s New Boxing Policy

Wireless industry competition is evolving. That could work in T-Mobile’s favor in its pursuit of Sprint.

Cable companies, using Wi-Fi and leased wireless networks, are offering mobile phone services. More competition could go a long way toward easing regulators’ concern that the T-Mobile-Sprint combination would reduce the number of major nationwide U.S. wireless carriers from four to three, Todd Shields and Scott Moritz report.

The FCC, which is reviewing the proposed $26.5 billion merger along with the Justice Department, has asked Comcast, Charter Communications and Altice USA about their mobile services. Comcast, the largest U.S. cable provider, introduced ...