Verizon and AT&T

Verizon has the widest network reach in California and takes the title for the best 4G LTE network in the state. AT&T comes in at a very close second, and T-Mobile is in third—but takes the cake for the state’s best 5G coverage.

Popular Cell Phone Carriers in San Francisco #1Visible100%#2Verizon96%#3AT&T70%#4Mint Mobile57%#5T-Mobile41%Best Cell Phone Carriers & Coverage in San Francisco | WhistleOut www.whistleout.com › CellPhones › Guides › Best-Plans-In-San-Francisco

4G Coverage Map and Availability in San Francisco In the San Francisco area, 99.97% of the area is covered by 4G data, and 99.97% is covered by 4G HD voice service. Verizon Wireless has the best 4G network in the San Francisco area with 99.96% coverage .