Verizon's "nationwide 5G" may be seriously slowing down your new iPhone, a problem that also affects other new 5G phones such as the Google Pixel 5 and the Samsung Galaxy Note 20 Ultra. The fix? Turning off 5G if you can. When 5G Is Slower Than 4G Verizon has America's fastest mobile network based on two systems: a 4G LTE network that gets faster every year, and a blazing-fast, high-capacity millimeter-wave "ultra wideband" (UWB) 5G network. Verizon's 4G LTE is often faster than T-Mobile's and AT&T's low-band 5G. But Verizon's UWB 5G network has extremely limited coverage, potentially giving Verizon phones a 4G icon in cities where its competitors have 5G—and when you're choosing a carrier, you're more likely to want that little 5G icon than to dig into the nuances of network speeds.