The two biggest U.S. wireless carriers, AT&T and Verizon, are unlikely to have much in the way of true 5G service deployed by the end of 2019, perhaps backing the view that Apple won't have support in iPhones until fall 2020. Verizon has a lack of standards-ready hardware, meaning it won't be able to expand home service beyond parts of Houston, Indianapolis, Los Angeles, and Sacramento until the second half of the year, CEO Hans Vestberg revealed in a results call on Wednesday. The carrier has no coverage map on its website. AT&T so far has 5G in 12 cities, such as Houston, Atlanta, and New Orleans, but has kept quiet on exact coverage and performance.