Best Coverage & Data Speeds in Los Angeles, CA: AT&T Wireless . Among the largest cell phone companies in the United States, AT&T Wireless has the best speed and coverage in the Los Angeles area. AT&T Wireless has 5G that covers 96.56% of the city.
Best Coverage & Data Speeds in Los Angeles, CA: AT&T Wireless . Among the largest cell phone companies in the United States, AT&T Wireless has the best speed and coverage in the Los Angeles area. AT&T Wireless has 5G that covers 96.56% of the city.