Now, the nation's largest wireless carrier, Verizon Wireless, is also calling out AT&T. While Verizon technically launched a 5G wireless network, it is limited to just a few cities in the United States at the moment and is only available for a fixed home broadband connection. So, while AT&T might have the only "true" operational mobile 5G service, its decision to muddy the waters with 5G E monikers promoted Verizon to write a blog post entitled "When we say '5G,' we mean 5G."