5G UW stands for 5G Ultra Wideband, which is Verizons version of high-band "mmWave" (millimeter wave) and mid-band 5G. It is a marketing term used by Verizon to identify one type of its 5G network. The 5G UW network is Verizons fastest 5G service that is available to millions of people around the U.S. It is available on all compatible iPhones and Android devices connected to Verizons 5G network and can be distinguished by a 5G UW or 5G UWB sign in the status bar. The sign lets users know that they are on Verizons super-fast 5G network instead of the slower Nationwide 5G network. The various types of 5G, such as 5G UC, 5G UW, and 5G+, can be confusing, so its worth explaining what these acronyms mean and how each carrier uses them to market their services.